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Allan MC, Johanningsmeier SD, Nakitto M, Guambe O, Abugu M, Pecota KV, Craig Yencho G. Baked sweetpotato textures and sweetness: An investigation into relationships between physicochemical and cooked attributes. Food Chem X 2024; 21:101072. [PMID: 38205162 PMCID: PMC10776778 DOI: 10.1016/j.fochx.2023.101072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/01/2023] [Accepted: 12/12/2023] [Indexed: 01/12/2024] Open
Abstract
Sweetpotato varieties vary greatly in perceived textures and sweetness. This study identified physicochemical factors that influence these attributes in cooked sweetpotatoes. Fifteen genotypes grown on three plots were baked and evaluated by a trained descriptive sensory analysis panel for sweetness and 13 texture attributes. Mechanical parameters were measured by texture profile analysis (TPA); and composition (starch, cell wall material, sugar contents), starch properties (thermal, granule type ratios, granule sizes), and amylase activities were characterized. TPA predicted fracturability and firmness well, whereas starch and sugar contents, B-type starch granule ratio, and amylase activities influenced prediction of mouthfeel textures. Sweetness perception was influenced by perceived particle size and sugar contents; and maltose generation during baking was highly correlated with raw sweetpotato starch content. These relationships between physicochemical sweetpotato properties and baked textures and sweetness could benefit breeders and processors in selecting biochemical traits that result in consumer preferred products.
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Affiliation(s)
- Matthew C. Allan
- USDA-ARS, SEA, Food Science and Market Quality and Handling Research Unit, 322 Schaub Hall, North Carolina State University, Raleigh, NC 27695, USA
| | - Suzanne D. Johanningsmeier
- USDA-ARS, SEA, Food Science and Market Quality and Handling Research Unit, 322 Schaub Hall, North Carolina State University, Raleigh, NC 27695, USA
| | - Mariam Nakitto
- International Potato Center (CIP-SSA), Plot 47 Ntinda II Road, PO Box 22247, Kampala, Uganda
| | - Osvalda Guambe
- International Potato Center (CIP-MOZ), Av. FPLM 2698, PO Box 2100, Maputo, Mozambique
| | - Modesta Abugu
- Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695, USA
| | - Kenneth V. Pecota
- Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695, USA
| | - G. Craig Yencho
- Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695, USA
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Grabau ZJ, Sandoval Ruiz R, Liu C. Fumigation using 1,3-dichloropropene manages Meloidogyne enterolobii in sweetpotato more effectively than fluorinated nematicides. Plant Dis 2024. [PMID: 38499976 DOI: 10.1094/pdis-12-23-2726-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Meloidogyne enterolobii is an emerging global threat and damaging to sweetpotato (Ipomoea batatas) production in the Southeast United States. Nematicide application is one of the few management strategies currently available against this nematode and field testing is urgently needed. The objective of this study was to assess common nematicides for management of M. enterolobii and non-target effects on free-living nematodes in sweetpotato field production. Treatments were (i) untreated control, (ii) fumigation using 1,3-dichloropropene, or at-transplant drench of fluorinated nematicides (iii) fluazaindolizine, (iv) fluopyram, or (v, vi) fluensulfone at 2 or 4 kg a.i./ha. In 2022 a field trial was conducted under severe M. enterolobii pressure and repeated in 2023 in the same location without treatment re-randomization. Fumigation using 1,3-dichloropropene (1,3-D) was the only consistently effective nematicide at improving marketable yield relative to control and also consistently reduced most storage root galling measurements and midseason Meloidogyne soil abundances. Fluensulfone at 4 kg a.i./ha consistently improved total yield, but not marketable yield whereas fluensulfone at 2 kg a.i./ha, fluazaindolizine, and fluopyram did not improve yield. Each fluorinated nematicide treatment reduced at least one nematode symptom or nematode soil abundances relative to control, but none provided consistent benefits across years. Even with 1,3-D fumigation, yield was poor, and none of the nematicide treatments provided a significant return on investment relative to forgoing nematicide application. There were minimal effects on free-living nematodes. In summary, 1,3-D is an effective nematicide for M. enterolobii management, but additional management will be needed under severe M. enterolobii pressure.
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Affiliation(s)
- Zane Joseph Grabau
- University of Florida, 1881 Natural Area Drive, Gainesville, Florida, United States, FL;
| | - Rebeca Sandoval Ruiz
- University of Florida Institute of Food and Agricultural Sciences, 53701, Entomology and Nematology Department, Gainesville, Florida, United States;
| | - Chang Liu
- University of Florida Institute of Food and Agricultural Sciences, 53701, Entomology and Nematology, Gainesville, Florida, United States
- Mississippi State University, 5547, Department of Biochemistry, Molecular Biology, Entomology, & Plant Pathology, Mississippi State, Mississippi, United States;
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Kreuze JF, Ramírez DA, Fuentes S, Loayza H, Ninanya J, Rinza J, David M, Gamboa S, De Boeck B, Diaz F, Pérez A, Silva L, Campos H. High-throughput characterization and phenotyping of resistance and tolerance to virus infection in sweetpotato. Virus Res 2024; 339:199276. [PMID: 38006786 PMCID: PMC10751700 DOI: 10.1016/j.virusres.2023.199276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 11/27/2023]
Abstract
Breeders have made important efforts to develop genotypes able to resist virus attacks in sweetpotato, a major crop providing food security and poverty alleviation to smallholder farmers in many regions of Sub-Saharan Africa, Asia and Latin America. However, a lack of accurate objective quantitative methods for this selection target in sweetpotato prevents a consistent and extensive assessment of large breeding populations. In this study, an approach to characterize and classify resistance in sweetpotato was established by assessing total yield loss and virus load after the infection of the three most common viruses (SPFMV, SPCSV, SPLCV). Twelve sweetpotato genotypes with contrasting reactions to virus infection were grown in the field under three different treatments: pre-infected by the three viruses, un-infected and protected from re-infection, and un-infected but exposed to natural infection. Virus loads were assessed using ELISA, (RT-)qPCR, and loop-mediated isothermal amplification (LAMP) methods, and also through multispectral reflectance and canopy temperature collected using an unmanned aerial vehicle. Total yield reduction compared to control and the arithmetic sum of (RT-)qPCR relative expression ratios were used to classify genotypes into four categories: resistant, tolerant, susceptible, and sensitives. Using 14 remote sensing predictors, machine learning algorithms were trained to classify all plots under the said categories. The study found that remotely sensed predictors were effective in discriminating the different virus response categories. The results suggest that using machine learning and remotely sensed data, further complemented by fast and sensitive LAMP assays to confirm results of predicted classifications could be used as a high throughput approach to support virus resistance phenotyping in sweetpotato breeding.
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Affiliation(s)
- Jan F Kreuze
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - David A Ramírez
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Segundo Fuentes
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Hildo Loayza
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru; Programa academico de ingenieria ambiental, Universidad de Huanuco, Jr. Hermilio Valdizan N° 871, Huanuco, Peru.
| | - Johan Ninanya
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Javier Rinza
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Maria David
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Soledad Gamboa
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Bert De Boeck
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Federico Diaz
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Ana Pérez
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Luis Silva
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
| | - Hugo Campos
- International Potato Center (CIP), Headquarters, P.O. Box 1558, Lima 15024, Peru.
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Acurio L, Salazar D, Castillo B, Santiana C, Martínez-Monzó J, Igual M. Characterization of Second-Generation Snacks Manufactured from Andean Tubers and Tuberous Root Flours. Foods 2023; 13:51. [PMID: 38201079 PMCID: PMC10778556 DOI: 10.3390/foods13010051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/13/2023] [Accepted: 12/16/2023] [Indexed: 01/12/2024] Open
Abstract
Andean roots, such as zanahoria blanca, achira, papa China, camote, oca, and mashua, contain high amounts of dietary fiber, vitamins, minerals, and fructo-oligosaccharides. This study aimed to demonstrate the possibility of obtaining healthy second-generation (2G) snacks (products obtained from the immediate expansion of the mixture at the exit of the extruder die) using these roots as raw materials. Corn grits were mixed with Andean root flour in a proportion of 80:20, and a Brabender laboratory extruder was used to obtain the 2G snacks. The addition of root flour increased the water content, water activity, sectional expansion index, hygroscopicity, bulk density, and water absorption index but decreased the porosity. However, all 2G snacks manufactured with Andean root flour showed better characteristics than did the control (made with corn grits) in texture (softer in the first bite and pleasant crispness) and optical properties (more intense and saturated colors). The developed snacks could be considered functional foods due to the high amount of carotenoids and phenolic compounds they exhibit after the addition of Andean root flours. The composition of raw roots, specifically the starch, fiber, and protein content, had the most impact on snack properties due to their gelatinization or denaturalization.
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Affiliation(s)
- Liliana Acurio
- Department of Science and Engineering in Food and Biotechnology, Technical University of Ambato, Av. Los Chasquis & Río Payamino, Ambato 180150, Ecuador; (D.S.); (B.C.)
- i-Food Group, Instituto Universitario de Ingeniería de Alimentos-FoodUPV, Universitat Politècnica de València, Camino de Vera s/n, 46021 Valencia, Spain;
| | - Diego Salazar
- Department of Science and Engineering in Food and Biotechnology, Technical University of Ambato, Av. Los Chasquis & Río Payamino, Ambato 180150, Ecuador; (D.S.); (B.C.)
| | - Bagner Castillo
- Department of Science and Engineering in Food and Biotechnology, Technical University of Ambato, Av. Los Chasquis & Río Payamino, Ambato 180150, Ecuador; (D.S.); (B.C.)
| | - Cristian Santiana
- Facultad de Ciencias Pecuarias, Escuela Superior Politécnica de Chimborazo (ESPOCH), Panamericana Sur Km 1 1/2, Riobamba 060155, Ecuador;
| | - Javier Martínez-Monzó
- i-Food Group, Instituto Universitario de Ingeniería de Alimentos-FoodUPV, Universitat Politècnica de València, Camino de Vera s/n, 46021 Valencia, Spain;
| | - Marta Igual
- i-Food Group, Instituto Universitario de Ingeniería de Alimentos-FoodUPV, Universitat Politècnica de València, Camino de Vera s/n, 46021 Valencia, Spain;
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Wu J, Zhang J, Ni W, Xu X, George MS, Lu G. Effect of Heat Treatment on the Quality and Soft Rot Resistance of Sweet Potato during Long-Term Storage. Foods 2023; 12:4352. [PMID: 38231861 DOI: 10.3390/foods12234352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/21/2023] [Accepted: 11/24/2023] [Indexed: 01/19/2024] Open
Abstract
Heat treatment is a widely applied technique in the preservation of fruits and vegetables, effectively addressing issues such as disease management, rot prevention, and browning. In this study, we investigated the impact of heat treatment at 35 °C for 24 h on the quality characteristics and disease resistance of two sweet potato varieties, P32/P (Ipomoea batatas (L.) Lam. cv 'Pushu13') and Xinxiang (Ipomoea batatas (L.) Lam. cv 'Xinxiang'). The growth in vitro and reproduction of Rhizopus stolonifer were significantly inhibited at 35 °C. However, it resumed when returned to suitable growth conditions. The heat treatment (at 35 °C for 24 h) was found to mitigate nutrient loss during storage while enhancing the structural characteristics and free radical scavenging capacity of sweet potato. Additionally, it led to increased enzyme activities for APX, PPO, and POD, alongside decreased activities for Cx and PG, thereby enhancing the disease resistance of sweet potato against soft rot. As a result, the heat treatment provided a theoretical basis for the prevention of sweet potato soft rot and had guiding significance for improving the resistance against sweet potato soft rot.
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Affiliation(s)
- Jifeng Wu
- Institute of Root and Tuber Crops, The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
| | - Jingzhen Zhang
- Institute of Root and Tuber Crops, The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
| | - Wenrong Ni
- Institute of Root and Tuber Crops, The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
| | - Ximing Xu
- Institute of Root and Tuber Crops, The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
| | - Melvin Sidikie George
- Crop Science Department, Njala University, Njala Campus, Private Mail Bag, Freetown 999127, Sierra Leone
| | - Guoquan Lu
- Institute of Root and Tuber Crops, The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
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Huang J, Fu X, Li W, Ni Z, Zhao Y, Zhang P, Wang A, Xiao D, Zhan J, He L. Molecular Cloning, Expression Analysis, and Functional Analysis of Nine IbSWEETs in Ipomoea batatas (L.) Lam. Int J Mol Sci 2023; 24:16615. [PMID: 38068939 PMCID: PMC10706379 DOI: 10.3390/ijms242316615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 12/18/2023] Open
Abstract
Sugar Will Eventually be Exported Transporter (SWEET) genes play an important regulatory role in plants' growth and development, stress response, and sugar metabolism, but there are few reports on the role of SWEET proteins in sweet potato. In this study, nine IbSWEET genes were obtained via PCR amplification from the cDNA of sweet potato. Phylogenetic analysis showed that nine IbSWEETs separately belong to four clades (Clade I~IV) and contain two MtN3/saliva domains or PQ-loop superfamily and six~seven transmembrane domains. Protein interaction prediction showed that seven SWEETs interact with other proteins, and SWEETs interact with each other (SWEET1 and SWEET12; SWEET2 and SWEET17) to form heterodimers. qRT-PCR analysis showed that IbSWEETs were tissue-specific, and IbSWEET1b was highly expressed during root growth and development. In addition to high expression in leaves, IbSWEET15 was also highly expressed during root expansion, and IbSWEET7, 10a, 10b, and 12 showed higher expression in the leaves. The expression of SWEETs showed a significant positive/negative correlation with the content of soluble sugar and starch in storage roots. Under abiotic stress treatment, IbSWEET7 showed a strong response to PEG treatment, while IbSWEET10a, 10b, and 12 responded significantly to 4 °C treatment and, also, at 1 h after ABA, to NaCl treatment. A yeast mutant complementation assay showed that IbSWEET7 had fructose, mannose, and glucose transport activity; IbSWEET15 had glucose transport activity and weaker sucrose transport activity; and all nine IbSWEETs could transport 2-deoxyglucose. These results provide a basis for further elucidating the functions of SWEET genes and promoting molecular breeding in sweet potato.
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Affiliation(s)
- Jingli Huang
- College of Agriculture, Guangxi University, Nanning 530004, China; (J.H.); (X.F.); (W.L.); (Z.N.); (Y.Z.); (P.Z.); (A.W.); (D.X.); (J.Z.)
- Agricultural and Animal Husbandry Industry Development Research Institute, Guangxi University, Nanning 530004, China
| | - Xuezhen Fu
- College of Agriculture, Guangxi University, Nanning 530004, China; (J.H.); (X.F.); (W.L.); (Z.N.); (Y.Z.); (P.Z.); (A.W.); (D.X.); (J.Z.)
| | - Wenyan Li
- College of Agriculture, Guangxi University, Nanning 530004, China; (J.H.); (X.F.); (W.L.); (Z.N.); (Y.Z.); (P.Z.); (A.W.); (D.X.); (J.Z.)
| | - Zhongwang Ni
- College of Agriculture, Guangxi University, Nanning 530004, China; (J.H.); (X.F.); (W.L.); (Z.N.); (Y.Z.); (P.Z.); (A.W.); (D.X.); (J.Z.)
| | - Yanwen Zhao
- College of Agriculture, Guangxi University, Nanning 530004, China; (J.H.); (X.F.); (W.L.); (Z.N.); (Y.Z.); (P.Z.); (A.W.); (D.X.); (J.Z.)
| | - Pinggang Zhang
- College of Agriculture, Guangxi University, Nanning 530004, China; (J.H.); (X.F.); (W.L.); (Z.N.); (Y.Z.); (P.Z.); (A.W.); (D.X.); (J.Z.)
- Agricultural and Animal Husbandry Industry Development Research Institute, Guangxi University, Nanning 530004, China
| | - Aiqin Wang
- College of Agriculture, Guangxi University, Nanning 530004, China; (J.H.); (X.F.); (W.L.); (Z.N.); (Y.Z.); (P.Z.); (A.W.); (D.X.); (J.Z.)
- Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, College of Agriculture, Guangxi University, Nanning 530004, China
- Key Laboratory of Crop Cultivation and Tillage, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Dong Xiao
- College of Agriculture, Guangxi University, Nanning 530004, China; (J.H.); (X.F.); (W.L.); (Z.N.); (Y.Z.); (P.Z.); (A.W.); (D.X.); (J.Z.)
- Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, College of Agriculture, Guangxi University, Nanning 530004, China
- Key Laboratory of Crop Cultivation and Tillage, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Jie Zhan
- College of Agriculture, Guangxi University, Nanning 530004, China; (J.H.); (X.F.); (W.L.); (Z.N.); (Y.Z.); (P.Z.); (A.W.); (D.X.); (J.Z.)
- Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, College of Agriculture, Guangxi University, Nanning 530004, China
- Key Laboratory of Crop Cultivation and Tillage, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Longfei He
- Agricultural and Animal Husbandry Industry Development Research Institute, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, College of Agriculture, Guangxi University, Nanning 530004, China
- Key Laboratory of Crop Cultivation and Tillage, College of Agriculture, Guangxi University, Nanning 530004, China
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Murata T. Histological studies on the relationship between the low seed set and abnormal embryo sacs in sweet potato, Ipomoea batatas (L.) Lam. Breed Sci 2023; 73:393-400. [PMID: 38106509 PMCID: PMC10722099 DOI: 10.1270/jsbbs.23022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/27/2023] [Indexed: 12/19/2023]
Abstract
This study aimed to investigate the relationship between low seed set and abnormal embryo sacs lacking normal female organs, such as one egg cell, two assistant cells, and two polar nuclei, in Ipomoea trifida, which is closely related to sweet potato, and sweet potato cultivars and lines, through histological analysis of their ovaries on flowering day. Ovaries of diploid, tetraploid, and hexaploid lines of I. trifida each had four ovules, except for some hexaploid lines with five or six ovules. Almost all sweet potato cultivars and lines had four ovules per ovary, although some sib-cross lines had two or three ovules. The number of ovules per ovary did not have direct effects on low seed set. The frequency of abnormal embryo sac increased with polyploidy in I. trifida. However, it varied among different sweet potato cultivars and lines. Moreover, the variation in abnormal embryo sacs occurred at an earlier stage of gametogenesis (type A) in the tetraploid and hexaploid plants of I. trifida and sweet potato cultivars and lines. These findings suggest that the high frequency of abnormal embryo sacs is a primary cause of low seed set in sweet potato and that it is closely related to the decline in seed propagation that occurs in the evolution process of sweet potato.
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Affiliation(s)
- Tatsuro Murata
- School of Agriculture, Tokai University, 871-12 Sugidou, Mashiki-machi, Kamimashiki-gun, Kumamoto 861-2205, Japan
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Arisanti CIS, Wirasuta IMAG, Musfiroh I, Ikram EHK, Muchtaridi M. Mechanism of Anti-Diabetic Activity from Sweet Potato ( Ipomoea batatas): A Systematic Review. Foods 2023; 12:2810. [PMID: 37509903 PMCID: PMC10378973 DOI: 10.3390/foods12142810] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/21/2023] [Accepted: 07/22/2023] [Indexed: 07/30/2023] Open
Abstract
This study aims to provide an overview of the compounds found in sweet potato (Ipomoea batatas) that contribute to its anti-diabetic activity and the mechanisms by which they act. A comprehensive literature search was conducted using electronic databases, such as PubMed, Scopus, and Science Direct, with specific search terms and Boolean operators. A total of 269 articles were initially retrieved, but after applying inclusion and exclusion criteria only 28 articles were selected for further review. Among the findings, four varieties of sweet potato were identified as having potential anti-diabetic properties. Phenolic acids, flavonols, flavanones, and anthocyanidins are responsible for the anti-diabetic activity of sweet potatoes. The anti-diabetic mechanism of sweet potatoes was determined using a combination of components with multi-target actions. The results of these studies provide evidence that Ipomoea batatas is effective in the treatment of type 2 diabetes.
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Affiliation(s)
- Cokorda Istri Sri Arisanti
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Pharmacy Department, Faculty of Mathematic and Natural Science, Udayana University, Kampus Bukit Jimbaran, Bali 80361, Indonesia
| | - I Made Agus Gelgel Wirasuta
- Pharmacy Department, Faculty of Mathematic and Natural Science, Udayana University, Kampus Bukit Jimbaran, Bali 80361, Indonesia
| | - Ida Musfiroh
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | - Emmy Hainida Khairul Ikram
- Centre for Dietetics Studies, Faculty of Health Sciences, Universiti Teknologi MARA Cawangan Selangor, Kampus Puncak Alam, Bandar Puncak Alam 42300, Malaysia
- Integrated Nutrition Science and Therapy Research Group (INSPIRE), Faculty of Health Sciences, Universiti Teknologi MARA Cawangan Selangor, Kampus Puncak Alam, Bandar Puncak Alam 42300, Malaysia
- Research Collaboration Center for Radiopharmaceuticals Theranostic, National Research and Innovation Agency (BRIN), Sumedang 45363, Indonesia
| | - Muchtaridi Muchtaridi
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Research Collaboration Center for Radiopharmaceuticals Theranostic, National Research and Innovation Agency (BRIN), Sumedang 45363, Indonesia
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Duque LO. Early root phenotyping in sweetpotato ( Ipomoea batatas L.) uncovers insights into root system architecture variability. PeerJ 2023; 11:e15448. [PMID: 37483980 PMCID: PMC10362855 DOI: 10.7717/peerj.15448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 05/03/2023] [Indexed: 07/25/2023] Open
Abstract
Background We developed a novel, non-destructive, expandable, ebb and flow soilless phenotyping system to deliver a capable way to study early root system architectural traits in stem-derived adventitious roots of sweetpotato (Ipomoea batatas L.). The platform was designed to accommodate up to 12 stems in a relatively small area for root screening. This platform was designed with inexpensive materials and equipped with an automatic watering system. Methods To test this platform, we designed a screening experiment for root traits using two contrasting sweetpotato genotypes, 'Covington' and 'NC10-275'. We monitored and imaged root growth, architecture, and branching patterns every five days up to 20 days. Results We observed significant differences in both architectural and morphological root traits for both genotypes tested. After 10 days, root length, surface root area, and root volume were higher in 'NC10-275' compared to 'Covington'. However, average root diameter and root branching density were higher in 'Covington'. Conclusion These results validated the effective and efficient use of this novel root phenotyping platforming for screening root traits in early stem-derived adventitious roots. This platform allowed for monitoring and 2D imaging of root growth over time with minimal disturbance and no destructive root sampling. This platform can be easily tailored for abiotic stress experiments, and permit root growth mapping and temporal and dynamic root measurements of primary and secondary adventitious roots. This phenotyping platform can be a suitable tool for examining root system architecture and traits of clonally propagated material for a large set of replicates in a relatively small space.
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David M, Kante M, Fuentes S, Eyzaguirre R, Diaz F, De Boeck B, Mwanga ROM, Kreuze J, Grüneberg WJ. Early-Stage Phenotyping of Sweet Potato Virus Disease Caused by Sweet Potato Chlorotic Stunt Virus and Sweet Potato Virus C to Support Breeding. Plant Dis 2023; 107:2061-2069. [PMID: 36510429 DOI: 10.1094/pdis-08-21-1650-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Sweet potato virus disease (SPVD) is a global constraint to sweetpotato (Ipomoea batatas) production, especially under intensive cultivation in the humid tropics such as East Africa. The objectives of this study were to develop a precision SPVD phenotyping protocol, to find new SPVD-resistant genotypes, and to standardize the first stages of screening for SPVD resistance. The first part of the protocol was based on enzyme-linked immunosorbent assay results for sweet potato chlorotic stunt virus (SPCSV) and sweet potato virus C (SPVC) with adjustments to a negative control (uninfected clone Tanzania) and was performed on a prebreeding population (VZ08) comprising 455 clones and 27 check clones graft inoculated under screenhouse conditions. The second part included field studies with 52 selected clones for SPCSV resistance from VZ08 and 8 checks. In screenhouse conditions, the resistant and susceptible check clones performed as expected; 63 clones from VZ08 exhibited lower relative absorbance values for SPCSV and SPVC than inoculated check Tanzania. Field experiments confirmed SPVD resistance of several clones selected by relative absorbance values (nine resistant clones in two locations; that is, 17.3% of the screenhouse selection), supporting the reliability of our method for SPVD-resistance selection. Two clones were promising, exhibiting high storage root yields of 28.7 to 34.9 t ha-1 and SPVD resistance, based on the proposed selection procedure. This modified serological analysis for SPVD-resistance phenotyping might lead to more efficient development of resistant varieties by reducing costs and time at early stages, and provide solid data for marker-assisted selection with a quantitative tool for classifying resistance.[Formula: see text] Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY 4.0 International license.
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Affiliation(s)
- Maria David
- International Potato Center (CIP), Lima 15024, Peru
| | - Moctar Kante
- International Potato Center (CIP), Lima 15024, Peru
| | | | | | | | | | | | - Jan Kreuze
- International Potato Center (CIP), Lima 15024, Peru
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Mathura SR. Deciphering the hormone regulatory mechanisms of storage root initiation in sweet potato: challenges and future prospects. AoB Plants 2023; 15:plad027. [PMID: 37292251 PMCID: PMC10244897 DOI: 10.1093/aobpla/plad027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 05/17/2023] [Indexed: 06/10/2023]
Abstract
Sweet potato (Ipomoea batatas) is an economically important food crop that is grown primarily for its edible storage roots. Several researchers have consequently been conducting studies to increase sweet potato yield, and an important aspect of this research involves understanding how storage root initiation occurs. Although significant progress has been made, several challenges associated with studying this crop have resulted in lagging progress compared to other crops and thus sweet potato storage root initiation is not clearly understood. This article highlights the most important aspects of the hormone signalling processes during storage root initiation that needs to be investigated further and suggests candidate genes that should be prioritized for further study, based on their importance in storage organ formation in other crops. Lastly, ways of overcoming the challenges associated with studying this crop are suggested.
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12
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Zhang Y, Lyu S, Hu Z, Yang X, Zhu H, Deng S. Identification and functional characterization of the SUMO system in sweet potato under salt and drought stress. Plant Sci 2023; 330:111645. [PMID: 36828141 DOI: 10.1016/j.plantsci.2023.111645] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/27/2022] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Sumoylation is a crucial post-translation modification (PTM) that is the covalent attachment of SUMO molecules to the substrate catalyzed by enzyme cascade. Sumoylation is essential in almost every physiological process of plants, particularly in response to abiotic stress. However, little is known about sumoylation in sweet potato (Ipomoea batatas), the world's seventh most important food crop. In this study, 17 sweet potato SUMO system genes have been cloned and functionally characterized. Multiple sequence alignment and phylogenetic analysis showed sweet potato SUMO system proteins had conserved domains and activity sites. IbSUMOs, IbSAE1, and IbSCE1 were localized in the cytoplasm and nucleus. E3 SUMO ligases showed nuclear or punctate localization. In vitro sumoylation assay confirmed the catalytic activity of sweet potato SUMO system components. Heterologous expression of IbSIZ1 genes in Arabidopsis atsiz1 mutant rescued the defective germination and growth phenotype. IbSCE1a/b and IbSIZ1a/b/c were salt and drought responsive genes. Heterologous expression of IbSCE1a/b/c improved the drought tolerance of Arabidopsis thaliana, while IbSIZ1a/b/c significantly enhanced the salt and drought tolerance. Our findings define that the SUMO system in sweet potato shared with conserved function but also possessed specific characterization. The resources presented here would facilitate uncovering the significance of sumoylation in sweet potato.
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Affiliation(s)
- Yi Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Shanwu Lyu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Zhifang Hu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Xuangang Yang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongbo Zhu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Shulin Deng
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China.
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Park H, Abe T, Kunitake H, Hirano T. Characterization of a novel mutant with inhibition of storage root formation in sweet potato. Breed Sci 2023; 73:212-218. [PMID: 37404352 PMCID: PMC10316310 DOI: 10.1270/jsbbs.22090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 01/07/2023] [Indexed: 07/06/2023]
Abstract
Sweet potato is a widely cultivated crop with storage roots. Although many studies have been conducted on the mechanism of its storage root formation, the details have not been fully elucidated. We screened mutant lines with inhibition of storage root formation to clarify parts of the mechanism. In this study, the process of storage root formation in one of the mutant lines, C20-8-1, was investigated. The inhibition of storage root formation was observed during the early stages of growth. The roots in C20-8-1 did not show histological differences compared to those in wild type. The transition from fibrous roots to pencil roots, which are the developmental stages prior to mature storage root formation, was delayed or inhibited in C20-8-1. The upregulation of starch biosynthesis-related genes and downregulation of lignin biosynthesis genes with storage root swelling were not confirmed in the root of C20-8-1 during the developmental transition stage, suggesting that most of the roots in C20-8-1 are in the pre-transition state toward the storage root swelling. C20-8-1 showed a mutant phenotype during the critical period of storage root swelling initiation, and further clarification of this mutation is expected to provide new insights into storage root formation.
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Affiliation(s)
- Hyungjun Park
- Interdisciplinary Graduate School of Agriculture and Engineering, University of Miyazaki, 1-1 Gakuenkibanadainishi, Miyazaki-shi, Miyazaki 889-2192, Japan
| | - Tomoko Abe
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - Hisato Kunitake
- Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadainishi, Miyazaki-shi, Miyazaki 889-2192, Japan
| | - Tomonari Hirano
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadainishi, Miyazaki-shi, Miyazaki 889-2192, Japan
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Hajihassani A, Nugraha GT, Tyson C. First report of the root-knot nematode Meloidogyne enterolobii on sweet potato in Georgia, United States. Plant Dis 2023. [PMID: 36916840 DOI: 10.1094/pdis-11-22-2692-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Five species of root-knot nematodes (RKN), Meloidogyne spp. (M. haplanaria, M. incognita, M. floridensis, M. javanica, and M. arenaria) were detected in 67% of vegetable-growing regions in Georgia, United States (Marquez et al. 2021a, b; Marquez and Hajihassani 2022a, b). In October 2021, two sweet potato (Ipomoea batatas) samples (FF1 and FF2) collected at harvest from a field located in Tattnall County, Reidsville, GA were received for assessment. Symptoms of RKN damage on storage roots included a veiny appearance, surface cracking, and bumpy yellow to brown colored specks (Fig. 1). The population density of RKN second-stage juveniles (J2) was 148 and 180 J2/100 cm3 of soil for FF1 and FF2 samples, respectively. Genomic DNA was isolated by smashing females (n=10) individually in 20 µL of PCR-grade water, followed by freezing at -20°C overnight and thawing at 95°C for 1 min. Each DNA sample was first analyzed with a duplex PCR method using RKN species-specific primer sets for the most common nematode species: Mi2F4/Mi1R1 (M. incognita) and Far/Rar (M. arenaria) and SEC-1F/SEC-1R (M. incognita) and Fjav/Rjav (M. javanica) (Zijlstra et al. 2000; Hajihassani et al. 2022). Since this method failed to identify the RKN species, DNA samples were amplified with Me-F and Me-R primers, specific for diagnosing M. enterolobii (Long et al. 2006). Species-specific PCR produced a 240 bp DNA fragment for FF1 and FF2 samples (Fig. 2), corresponding to M. enterolobii. RKN species identification was confirmed by DNA sequencing using C2F3/1108 and TRNAH/MRH106 primers (Powers et al. 2018; Stanton et al. 1997). Products of C2F3/1108 (GenBank accessions ON320401 and ON320405) were 100% identical with 100% query coverage to a North Carolina M. enterolobii isolate (MN809527), while TRNAH/MHR106 sequences (ON320402 and ON320406) was 99.4-99.8% identical with 89-91% query coverage to a China isolate (MF467278). Measurements [Mean (range)] of body length of M. enterolobii J2 (BL): 454.0 (411.3-485.1) µm; maximum body width (BW): 15.1 (13.8-17.0) µm; stylet length: 14.3 (12.7-15.2) µm; total BL/greatest BW: 30.1 (28.6-31.4) µm; and BL/head end to posterior end of metacorpus: 7.3 (6.5-8.2) µm. Morphological measurements of J2 were comparable to the original description of M. enterolobii Yang and Eisenback. The host suitability of sweet potato varieties [Covington (susceptible to M. enterolobii), Beauregard (susceptible to intermediate), and Regal (resistant)] to the M. enterolobii isolate was assessed (Rutter et al. 2021). Nematode eggs were extracted from skin/bumps of samples FF1 and FF2 by blending (15 sec) and shaking in a 0.5% NaOCl solution (5 min), followed by washing and centrifugation in a standard sucrose solution. Sweet potato slips were transplanted in 10.8-cm-diam. pots filled with sand and steamed field soil (1:1 v/v), and two days after planting, were inoculated with 10,000 eggs of M. enterolobii (six replicates per plant variety). Plants were maintained in a greenhouse at 25-28°C for 85 days in a completely randomized design. Root galling index (scale of 0 to 5) of 4.4, 4.2, and 0.8 (Fig. 3) and reproduction factor (final egg numbers/initial egg number) of 8.2, 7.5, and 0.01 were obtained for Covington, Beauregard, and Regal, respectively confirming that Covington and Beauregard are susceptible to M. enterolobii while Regal is resistant. Meloidogyne enterolobii has not been reported in GA and this is the first report of the nematode on sweet potato in the state. This RKN species is an emerging pest of economic importance in many crops in the Southern United States (Brito et al. 2004; Rutter et al. 2018; Ye et al. 2013). Development of effective short- and long-term control procedures is urgently needed for managing M. enterolobii.
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Affiliation(s)
- Abolfazl Hajihassani
- University of Florida Institute of Food and Agricultural Sciences, 53701, 3205 College Ave., Davie, Florida, United States, 33314;
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Zhang J, He L, Dong J, Zhao C, Wang Y, Tang R, Wang W, Ji Z, Cao Q, Xie H, Wu Z, Li R, Yuan L, Jia X. Integrated metabolic and transcriptional analysis reveals the role of carotenoid cleavage dioxygenase 4 (IbCCD4) in carotenoid accumulation in sweetpotato tuberous roots. Biotechnol Biofuels Bioprod 2023; 16:45. [PMID: 36918944 PMCID: PMC10012543 DOI: 10.1186/s13068-023-02299-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 03/03/2023] [Indexed: 03/16/2023]
Abstract
BACKGROUND Plant carotenoids are essential for human health, having wide uses in dietary supplements, food colorants, animal feed additives, and cosmetics. With the increasing demand for natural carotenoids, plant carotenoids have gained great interest in both academic and industry research worldwide. Orange-fleshed sweetpotato (Ipomoea batatas) enriched with carotenoids is an ideal feedstock for producing natural carotenoids. However, limited information is available regarding the molecular mechanism responsible for carotenoid metabolism in sweetpotato tuberous roots. RESULTS In this study, metabolic profiling of carotenoids and gene expression analysis were conducted at six tuberous root developmental stages of three sweetpotato varieties with different flesh colors. The correlations between the expression of carotenoid metabolic genes and carotenoid levels suggested that the carotenoid cleavage dioxygenase 4 (IbCCD4) and 9-cis-epoxycarotenoid cleavage dioxygenases 3 (IbNCED3) play important roles in the regulation of carotenoid contents in sweetpotato. Transgenic experiments confirmed that the total carotenoid content decreased in the tuberous roots of IbCCD4-overexpressing sweetpotato. In addition, IbCCD4 may be regulated by two stress-related transcription factors, IbWRKY20 and IbCBF2, implying that the carotenoid accumulation in sweeetpotato is possibly fine-tuned in responses to stress signals. CONCLUSIONS A set of key genes were revealed to be responsible for carotenoid accumulation in sweetpotato, with IbCCD4 acts as a crucial player. Our findings provided new insights into carotenoid metabolism in sweetpotato tuberous roots and insinuated IbCCD4 to be a target gene in the development of new sweetpotato varieties with high carotenoid production.
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Affiliation(s)
- Jie Zhang
- College of Agriculture, Shanxi Agricultural University, Jinzhong, China
| | - Liheng He
- College of Agriculture, Shanxi Agricultural University, Jinzhong, China
| | - Jingjing Dong
- College of Agriculture, Shanxi Agricultural University, Jinzhong, China.,Department of Life Sciences, Changzhi University, Changzhi, China
| | - Cailiang Zhao
- College of Agriculture, Shanxi Agricultural University, Jinzhong, China
| | - Yujie Wang
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng, China
| | - Ruimin Tang
- College of Life Sciences, Shanxi Agricultural University, Jinzhong, China
| | - Wenbin Wang
- College of Life Sciences, Shanxi Agricultural University, Jinzhong, China
| | - Zhixian Ji
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Qinghe Cao
- Xuzhou Sweetpotato Research Center, Xuzhou Institute of Agricultural Sciences, Key Laboratory of Sweetpotato Biology and Genetic Breeding, Ministry of Agriculture, Xuzhou, China
| | - Hong'e Xie
- Institute of Cotton Research, Shanxi Agricultural University, Yuncheng, China
| | - Zongxin Wu
- Institute of Cotton Research, Shanxi Agricultural University, Yuncheng, China
| | - Runzhi Li
- College of Agriculture, Shanxi Agricultural University, Jinzhong, China
| | - Ling Yuan
- Department of Plant and Soil Sciences, Kentucky Tobacco Research & Development Center, University of Kentucky, Lexington, USA
| | - Xiaoyun Jia
- College of Life Sciences, Shanxi Agricultural University, Jinzhong, China.
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Medison MB, Pan R, Peng Y, Medison RG, Shalmani A, Yang X, Zhang W. Identification of HQT gene family and their potential function in CGA synthesis and abiotic stresses tolerance in vegetable sweet potato. Physiol Mol Biol Plants 2023; 29:361-376. [PMID: 37033766 PMCID: PMC10073390 DOI: 10.1007/s12298-023-01299-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
Hydroxycinnamate-CoA quinate hydroxycinnamoyl transferase (HQT) enzyme affect plant secondary metabolism and are crucial for growth and development. To date, limited research on the genome-wide analysis of HQT family genes and their regulatory roles in chlorogenic acid (CGA) accumulation in leafy vegetable sweet potato is available. Here, a total of 58 HQT family genes in the sweet potato genome (named IbHQT) were identified and analyzed. We studied the chromosomal distribution, phylogenetic relationship, motifs distribution, collinearity, and cis-acting element analysis of HQT family genes. This study used two sweet potato varieties, high CGA content Fushu 7-6-14-7 (HC), and low CGA content Fushu 7-6 (LC). Based on the phylogenetic analysis, clade A was unique among the identified four clades as it contained HQT genes from various species. The chromosomal location and collinearity analysis revealed that tandem gene duplication may promote the IbHQT gene expansion and expression. The expression patterns and profile analysis showed changes in gene expression levels at different developmental stages and under cold, drought, and salt stress conditions. The expression analysis verified by qRT-PCR revealed that IbHQT genes were highly expressed in the HC variety leaves than in the LC variety. Furthermore, cloning and gene function analysis unveiled that IbHQT family genes are involved in the biosynthesis and accumulation of CGA in sweet-potato. This study expands our understanding of the regulatory role of HQT genes in sweet-potato and lays a foundation for further functional characterization and genetic breeding by engineering targeted HQT candidate genes in various sweet-potato varieties and other species. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-023-01299-4.
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Affiliation(s)
- Milca Banda Medison
- Research Center of Crop Stresses Resistance Technologies/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025 China
| | - Rui Pan
- Research Center of Crop Stresses Resistance Technologies/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025 China
| | - Ying Peng
- Research Center of Crop Stresses Resistance Technologies/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025 China
| | - Rudoviko Galileya Medison
- Research Center of Crop Stresses Resistance Technologies/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025 China
| | - Abdullah Shalmani
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100 China
| | - XinSun Yang
- Institute of Food Crops/Hubei Engineering and Technology Research Centre of Sweet Potato/Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Hubei Academy of Agricultural Sciences, Wuhan, 430064 China
| | - Wenying Zhang
- Research Center of Crop Stresses Resistance Technologies/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025 China
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Nie N, Huo J, Sun S, Zuo Z, Chen Y, Liu Q, He S, Gao S, Zhang H, Zhao N, Zhai H. Genome-Wide Characterization of the PIFs Family in Sweet Potato and Functional Identification of IbPIF3.1 under Drought and Fusarium Wilt Stresses. Int J Mol Sci 2023; 24:ijms24044092. [PMID: 36835500 PMCID: PMC9965949 DOI: 10.3390/ijms24044092] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/12/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Phytochrome-interacting factors (PIFs) are essential for plant growth, development, and defense responses. However, research on the PIFs in sweet potato has been insufficient to date. In this study, we identified PIF genes in the cultivated hexaploid sweet potato (Ipomoea batatas) and its two wild relatives, Ipomoea triloba, and Ipomoea trifida. Phylogenetic analysis revealed that IbPIFs could be divided into four groups, showing the closest relationship with tomato and potato. Subsequently, the PIFs protein properties, chromosome location, gene structure, and protein interaction network were systematically analyzed. RNA-Seq and qRT-PCR analyses showed that IbPIFs were mainly expressed in stem, as well as had different gene expression patterns in response to various stresses. Among them, the expression of IbPIF3.1 was strongly induced by salt, drought, H2O2, cold, heat, Fusarium oxysporum f. sp. batatas (Fob), and stem nematodes, indicating that IbPIF3.1 might play an important role in response to abiotic and biotic stresses in sweet potato. Further research revealed that overexpression of IbPIF3.1 significantly enhanced drought and Fusarium wilt tolerance in transgenic tobacco plants. This study provides new insights for understanding PIF-mediated stress responses and lays a foundation for future investigation of sweet potato PIFs.
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Affiliation(s)
- Nan Nie
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jinxi Huo
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Sifan Sun
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Zhidan Zuo
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yanqi Chen
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Qingchang Liu
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Shaozhen He
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Shaopei Gao
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Huan Zhang
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ning Zhao
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Hong Zhai
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
- Correspondence: ; Tel.: +86-010-62732559
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Watson TT, Hamm CS, Cole Gregorie J. Evaluation of fumigant and non-fumigant nematicides for management of Rotylenchulus reniformis on sweetpotato. J Nematol 2023; 55:20230061. [PMID: 38283661 PMCID: PMC10817821 DOI: 10.2478/jofnem-2023-0061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Indexed: 01/30/2024] Open
Abstract
Reniform nematode (Rotylenchulus reniformis) is a major pest of sweetpotato in many production regions in Southern United States. Applying soil fumigants and non-fumigant nematicides are the primary management strategies available to growers. This study compared the relative efficacy of nematicides (1,3-dichloropropene, fluopyram, oxamyl, fluazaindolizine, aldicarb, Majestene, and fluensulfone) for management of reniform nematode on sweetpotato. Fumigating soil with 1,3-dichloropropene consistently reduced soil population densities of reniform nematode at the time of planting in both trial years (31 - 36% reduction relative to the untreated control); however, the duration of suppression varied greatly by growing season. A similar trend was observed with fluopyram (56 - 67% reduction) and aldicarb (63 - 65% reduction), which provided season-long suppression of reniform nematode population development in 2021 but had no impact in 2022. In 2021, nematicide application had no impact on yield; however, in 2022, oxamyl and aldicarb increased the yield of U.S.#1 grade sweetpotato. Overall, soil fumigation with 1,3-dichloropropene and in-furrow application of fluopyram and aldicarb provided the most consistent suppression of reniform nematode on sweetpotato.
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Affiliation(s)
- Tristan T. Watson
- LSU AgCenter, Department of Plant Pathology and Crop Physiology, 302 Life Science Building, Baton Rouge, Louisiana, 70803, United States
| | - Caleb S. Hamm
- LSU AgCenter, Department of Plant Pathology and Crop Physiology, 302 Life Science Building, Baton Rouge, Louisiana, 70803, United States
| | - J. Cole Gregorie
- LSU AgCenter, Sweet Potato Research Station, 103 Sweet Potato Road, Chase, Louisiana, 71324, United States
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Zhang JZ, He PW, Xu XM, Lü ZF, Cui P, George MS, Lu GQ. Genome-Wide Identification and Expression Analysis of the Xyloglucan Endotransglucosylase/Hydrolase Gene Family in Sweet Potato [ Ipomoea batatas (L.) Lam]. Int J Mol Sci 2023; 24. [PMID: 36614218 DOI: 10.3390/ijms24010775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 01/04/2023] Open
Abstract
The xyloglucan endotransglucosylase/hydrolase (XET/XEH, also named XTH) family is a multigene family, the function of which plays a significant role in cell-wall rebuilding and stress tolerance in plants. However, the specific traits of the XTH gene family members and their expression pattern in different tissues and under stress have not been carried out in sweet potato. Thirty-six XTH genes were identified in I. batatas, all of which had conserved structures (Glyco_hydro_16). Based on Neighbor-Joining phylogenetic analysis the IbXTHs can be divided into three subfamilies-the I/II, IIIA, and IIIB subfamilies, which were unevenly distributed on 13 chromosomes, with the exception of Chr9 and Chr15. Multiple cis-acting regions related to growth and development, as well as stress responses, may be found in the IbXTH gene promoters. The segmental duplication occurrences greatly aided the evolution of IbXTHs. The results of a collinearity analysis showed that the XTH genes of sweet potato shared evolutionary history with three additional species, including A. thaliana, G. max, and O. sativa. Additionally, based on the transcriptome sequencing data, the results revealed that the IbXTHs have different expression patterns in leaves, stems, the root body (RB), the distal end (DE), the root stock (RS), the proximal end (PE), the initiative storage root (ISR), and the fibrous root (FR), and many of them are well expressed in the roots. Differentially expressed gene (DEG) analysis of FRs after hormone treatment of the roots indicated that IbXTH28 and IbXTH30 are up-regulated under salicylic acid (SA) treatment but down-regulated under methyl jasmonate (MeJA) treatment. Attentionally, there were only two genes showing down-regulation under the cold and drought treatment. Collectively, all of the findings suggested that genes from the XTH family are crucial for root specificity. This study could provide a theoretical basis for further research on the molecular function of sweet potato XTH genes.
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Shkryl Y, Yugay Y, Vasyutkina E, Chukhlomina E, Rusapetova T, Bulgakov V. The RolB/RolC homolog from sweet potato promotes early flowering and triggers premature leaf senescence in transgenic Arabidopsis thaliana plants. Plant Physiol Biochem 2022; 193:50-60. [PMID: 36323197 DOI: 10.1016/j.plaphy.2022.10.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 09/30/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Expression of the root oncogenic loci (rol) genes from Agrobacterium rhizogenes provokes multiple divergent effects on physiological properties in transgenic plants and cell cultures. Recently, the homolog of the rolB and rolC oncogenes, named Ib-rolB/C, has been identified in the genome of a naturally transgenic food crop, i.e. sweet potato. In this study, we revealed that the Ipomoea batatas genome contains two full-length copies of Ib-rolB/C. The expression level of Ib-rolB/C in leaves of sweet potato showed a clear age-dependent pattern and increased as leaves senesce. Moreover, dark-induced senescence strongly up-regulates transcription of the Ib-rolB/C gene. Though Ib-rolB/C shares homology with its counterparts in A. rhizogenes, this gene was not capable to induce hairy roots or tumors in kalanchoe and tobacco plants. The Ib-rolB/C gene induced early-flowering phenotype, altered leaf morphology, and promoted premature leaf senescence in transgenic Arabidopsis thaliana plants. At the same time, Ib-rolB/C did not affect root morphology and biomass. Our results suggest that Ib-RolB/RolC participates in both age- and dark-triggered leaf senescence programs.
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Affiliation(s)
- Yury Shkryl
- Federal Scientific Center of the East Asia Terrestrial Biodiversity of the Far East Branch of Russian Academy of Sciences, Vladivostok, 690022, Russia.
| | - Yulia Yugay
- Federal Scientific Center of the East Asia Terrestrial Biodiversity of the Far East Branch of Russian Academy of Sciences, Vladivostok, 690022, Russia
| | - Elena Vasyutkina
- Federal Scientific Center of the East Asia Terrestrial Biodiversity of the Far East Branch of Russian Academy of Sciences, Vladivostok, 690022, Russia
| | - Ekaterina Chukhlomina
- Federal Scientific Center of the East Asia Terrestrial Biodiversity of the Far East Branch of Russian Academy of Sciences, Vladivostok, 690022, Russia
| | - Tatiana Rusapetova
- Federal Scientific Center of the East Asia Terrestrial Biodiversity of the Far East Branch of Russian Academy of Sciences, Vladivostok, 690022, Russia
| | - Victor Bulgakov
- Federal Scientific Center of the East Asia Terrestrial Biodiversity of the Far East Branch of Russian Academy of Sciences, Vladivostok, 690022, Russia
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21
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Drapal M, Gerrish C, Fraser PD. Changes in carbon allocation and subplastidal amyloplast structures of specialised Ipomoea batatas (sweet potato) storage root phenotypes. Phytochemistry 2022; 203:113409. [PMID: 36049525 DOI: 10.1016/j.phytochem.2022.113409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
Vitamin A deficiency (VAD) in Low and Medium Income countries remains a major health concern. Ipomoea batatas, orange sweet potato (OSP), is one of the biofortification solutions being implemented by the World Health Organisation (WHO) to combat VAD. However, high provitamin A (β-carotene) content has been associated with a reduction in dry matter, reducing calorific value and having adverse effects on consumer traits. Both starch and carotenoid formation are located in amyloplasts and could potentially compete for the same precursors. Hence, five different sweet potato storage root phenotypes were characterized through spatial metabolomics and proteomics at the sub-plastidal level. The metabolite data suggested an indirect correlation of starch and carotenoids through the TCA cycle and pentose phosphate pathway. Furthermore, a change in lipid composition was observed to accommodate the storage of carotenoids in the hydrophilic environment of the amyloplast. The data suggests an alteration of cellular ultra-structures and perturbation of metabolism in high β-carotene producing sweet potato roots. This corroborates with previous gene expression analysis through biochemical analysis of sweet potato root tissue.
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Affiliation(s)
- Margit Drapal
- School of Biological Sciences, Royal Holloway University of London, Egham, TW200EX, United Kingdom
| | - Christopher Gerrish
- School of Biological Sciences, Royal Holloway University of London, Egham, TW200EX, United Kingdom
| | - Paul D Fraser
- School of Biological Sciences, Royal Holloway University of London, Egham, TW200EX, United Kingdom.
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22
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Mugisa I, Karungi J, Musana P, Odama R, Alajo A, Chelangat DM, Anyanga MO, Oloka BM, Gonçalves dos Santos I, Talwana H, Ochwo-Ssemakula M, Edema R, Gibson P, Ssali R, Campos H, Olukolu BA, da Silva Pereira G, Yencho C, Yada B. Combining ability and heritability analysis of sweetpotato weevil resistance, root yield, and dry matter content in sweetpotato. Front Plant Sci 2022; 13:956936. [PMID: 36160986 PMCID: PMC9490021 DOI: 10.3389/fpls.2022.956936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/11/2022] [Indexed: 06/16/2023]
Abstract
Efficient breeding and selection of superior genotypes requires a comprehensive understanding of the genetics of traits. This study was aimed at establishing the general combining ability (GCA), specific combining ability (SCA), and heritability of sweetpotato weevil (Cylas spp.) resistance, storage root yield, and dry matter content in a sweetpotato multi-parental breeding population. A population of 1,896 F1 clones obtained from an 8 × 8 North Carolina II design cross was evaluated with its parents in the field at two sweetpotato weevil hotspots in Uganda, using an augmented row-column design. Clone roots were further evaluated in three rounds of a no-choice feeding laboratory bioassay. Significant GCA effects for parents and SCA effects for families were observed for most traits and all variance components were highly significant (p ≤ 0.001). Narrow-sense heritability estimates for weevil severity, storage root yield, and dry matter content were 0.35, 0.36, and 0.45, respectively. Parental genotypes with superior GCA for weevil resistance included "Mugande," NASPOT 5, "Dimbuka-bukulula," and "Wagabolige." On the other hand, families that displayed the highest levels of resistance to weevils included "Wagabolige" × NASPOT 10 O, NASPOT 5 × "Dimbuka-bukulula," "Mugande" × "Dimbuka-bukulula," and NASPOT 11 × NASPOT 7. The moderate levels of narrow-sense heritability observed for the traits, coupled with the significant GCA and SCA effects, suggest that there is potential for their improvement through conventional breeding via hybridization and progeny selection and advancement. Although selection for weevil resistance may, to some extent, be challenging for breeders, efforts could be boosted through applying genomics-assisted breeding. Superior parents and families identified through this study could be deployed in further research involving the genetic improvement of these traits.
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Affiliation(s)
- Immaculate Mugisa
- National Crops Resources Research Institute (NaCRRI), NARO, Kampala, Uganda
- Department of Agricultural Production, Makerere University, Kampala, Uganda
| | - Jeninah Karungi
- Department of Agricultural Production, Makerere University, Kampala, Uganda
| | - Paul Musana
- National Crops Resources Research Institute (NaCRRI), NARO, Kampala, Uganda
| | - Roy Odama
- National Crops Resources Research Institute (NaCRRI), NARO, Kampala, Uganda
| | - Agnes Alajo
- National Crops Resources Research Institute (NaCRRI), NARO, Kampala, Uganda
| | | | - Milton O. Anyanga
- National Crops Resources Research Institute (NaCRRI), NARO, Kampala, Uganda
| | - Bonny M. Oloka
- National Crops Resources Research Institute (NaCRRI), NARO, Kampala, Uganda
| | | | - Herbert Talwana
- Department of Agricultural Production, Makerere University, Kampala, Uganda
| | | | - Richard Edema
- Department of Agricultural Production, Makerere University, Kampala, Uganda
| | - Paul Gibson
- Department of Agricultural Production, Makerere University, Kampala, Uganda
| | | | | | - Bode A. Olukolu
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United States
| | | | - Craig Yencho
- Department of Horticultural Science, North Carolina State University, Raleigh, NC, United States
| | - Benard Yada
- National Crops Resources Research Institute (NaCRRI), NARO, Kampala, Uganda
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23
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Holder AJ, Hayes F. Substantial yield reduction in sweet potato due to tropospheric ozone, the dose-response function. Environ Pollut 2022; 304:119209. [PMID: 35341818 DOI: 10.1016/j.envpol.2022.119209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/03/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
Impacts of tropospheric ozone on sweet potato (Ipomoea batatas) are poorly understood despite being a staple food grown in locations deemed at risk from ozone pollution. Three varieties of sweet potato were exposed to ozone treatments (peaks of: 30 (Low), 80 (Medium), and 110 (High) ppb) using heated solardomes. Weekly measurements of stomatal conductance (gs) and chlorophyll content (CI) were used to determine physiological responses, along with final yield. gs and CI were reduced with increasing ozone exposure, but effects were partially masked due to elevated leaf senescence and turnover. Yield for the Erato orange and Murasaki varieties was reduced by ∼40% and ∼50% (Medium and High ozone treatments, respectively, vs Low) whereas Beauregard yield was reduced by 58% in both. The DO3SE (Deposition of Ozone for Stomatal Exchange) model was parameterized for gs in response to light, temperature, vapour pressure deficit and soil water potential. Clear responses of gs to the environmental parameters were found. Yield reductions were correlated with both concentration based AOT40 (accumulated ozone above a threshold of 40 ppb) and flux based POD6 (accumulated stomatal flux of ozone above a threshold of 6 nmol m- 2 s- 1) metrics (R2 0.66 p = 0.01; and R2 0.44 p = 0.05, respectively). A critical level estimate of a POD6 of 3 (mmol m-2 Projected Leaf Area-1) was obtained using the relationship. This study showed that sweet potato yield was reduced by ozone pollution, and that stomatal conductance and chlorophyll content were also affected. Results from this study can improve model predictions of ozone impacts on sweet potato together with associated ozone risk assessments for tropical countries.
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Affiliation(s)
- Amanda J Holder
- UK Centre for Ecology & Hydrology, Environment Centre Wales, Deiniol Road, Bangor, LL57 2UW, UK
| | - Felicity Hayes
- UK Centre for Ecology & Hydrology, Environment Centre Wales, Deiniol Road, Bangor, LL57 2UW, UK.
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24
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Pan R, Buitrago S, Peng Y, Fatouh Abou-Elwafa S, Wan K, Liu Y, Wang R, Yang X, Zhang W. Genome-wide identification of cold-tolerance genes and functional analysis of IbbHLH116 gene in sweet potato. Gene X 2022; 837:146690. [PMID: 35738441 DOI: 10.1016/j.gene.2022.146690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 06/05/2022] [Accepted: 06/17/2022] [Indexed: 11/17/2022] Open
Abstract
Sweet potato (Ipomoea batatas L.) originated from South America; therefore, it is vulnerable to low temperature. Here, the evolutionary analysis of 22 cold-responsive genes in 35 plant species revealed that the identified MYC-type basic helix-loop-helix (bHLH) transcription factors exhibit diverse structures. We found that the number of bHLH gene family members was significantly lower than that of cold-tolerant species. We further systematically evaluated the gene structure, promoter analysis, synteny analysis, and expression pattern of 28 bHLH gene family members in sweet potato. The basic helix-loop-helix protein 116 (IbbHLH116) has the closest phylogeny to the AtICE1 protein of A. thaliana. However, the IbbHLH116 protein from cold-tolerant variety FS18 showed a 37.90% of sequence homology with AtICE1 protein. Subcellular localization analysis showed that IbbHLH116 is localized in the nucleus. The transcripts of IbbHLH116 were highly accumulated in cold-tolerant genotype FS18, particularly in new leaves and stems, compared to the cold-sensitive genotype NC1 under cold stress. Overexpression of IbbHLH116 in the wild type (Col-0) A. thaliana significantly enhanced cold tolerance in transgenic plants by regulating activities of oxidative protective enzymes, such as peroxidase (POD), superoxide dismutase (SOD), and the contents of malondialdehyde (MDA), proline and soluble proteins. Moreover, overexpression of IbbHLH116 in ice1 mutant A. thaliana fully rescued the cold-sensitive phenotype by promoting the expression of C-repeat binding factors 3 (CBF3). Overexpression of IbbHLH116 in the sweet potato callus also induced the expression of CBF3 under low temperature. These results imply that IbbHLH116 can perform the function of the ICE1 gene in conferring cold tolerance in sweet potato.
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Affiliation(s)
- Rui Pan
- Research Center of Crop Stresses Resistance Technologies/ Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou 434025, China
| | - Sebastian Buitrago
- Research Center of Crop Stresses Resistance Technologies/ Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou 434025, China
| | - Ying Peng
- Research Center of Crop Stresses Resistance Technologies/ Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou 434025, China
| | | | - Kui Wan
- Research Center of Crop Stresses Resistance Technologies/ Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou 434025, China
| | - Yi Liu
- Research Center of Crop Stresses Resistance Technologies/ Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou 434025, China; Hubei Sweet potato Engineering and Technology Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Rongsen Wang
- Research Center of Crop Stresses Resistance Technologies/ Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou 434025, China
| | - Xinsun Yang
- Hubei Sweet potato Engineering and Technology Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Wenying Zhang
- Research Center of Crop Stresses Resistance Technologies/ Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou 434025, China.
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25
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Qi ZH, Yan XJ, Liu YY, Hou X, Zhao Z, Zhu YY, He YJ, Wang ZJ, Yang HJ, Na ZY, Zhao YL, Luo XD. The Protective Effect of Sweet Potato Root Tuber on Chemotherapy-Induced Thrombocytopenia. Mol Nutr Food Res 2022; 66:e2200126. [PMID: 35712860 DOI: 10.1002/mnfr.202200126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/01/2022] [Indexed: 11/08/2022]
Abstract
SCOPE Sweet potato (Ipomoea batatas L.) is one of the leading crops worldwide, containing high nutritional components such as fiber and polyphenols. Root tuber of Simon 1 (SIMON), a cultivar of sweet potato, is a folk food in China with a hemostasis function but lacking experimental data support. METHODS AND RESULTS Now the protective effect of SIMON on chemotherapy-induced thrombocytopenia (CIT), a serious complication of cancer treatment, is investigated for the first time by a CIT mouse model induced by intraperitoneal injection of carboplatin. As a result, SIMON raises the number of peripheral platelets, white blood cells, and bone marrow nucleated cells in CIT mice significantly. Besides, carboplatin-induced atrophy of the thymus, spleen, and disordered metabolism of the inflammatory immune system and glycerophospholipids are also reversed by SIMON. Phytochemical analysis of SIMON indicates 16 compounds including eight phenolic derivatives, which might be associated with its anti-CIT bioactivity. CONCLUSION Sweet potato (SIMON) may be an efficient function food in the prevention of bleeding disorders.
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Affiliation(s)
- Zi-Heng Qi
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Xiao-Jun Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Yang-Yang Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Xia Hou
- The Affiliated Hospital of Yunnan University, Kunming, 650021, P. R. China
| | - Zhu Zhao
- The Affiliated Hospital of Yunnan University, Kunming, 650021, P. R. China
| | - Yan-Yan Zhu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Ying-Jie He
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Zhao-Jie Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Hong-Jun Yang
- Yunnan Institute for Ecological Agriculture, Kunming, 650000, P. R. China
| | - Zhong-Yuan Na
- Yunnan Institute for Ecological Agriculture, Kunming, 650000, P. R. China
| | - Yun-Li Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Xiao-Dong Luo
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China.,State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, P. R. China
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26
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Yang Z, Ni Y, Lin Z, Yang L, Chen G, Nijiati N, Hu Y, Chen X. De novo assembly of the complete mitochondrial genome of sweet potato ( Ipomoea batatas [L.] Lam) revealed the existence of homologous conformations generated by the repeat-mediated recombination. BMC Plant Biol 2022; 22:285. [PMID: 35681138 PMCID: PMC9185937 DOI: 10.1186/s12870-022-03665-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/30/2022] [Indexed: 05/27/2023]
Abstract
Sweet potato (Ipomoea batatas [L.] Lam) is an important food crop, an excellent fodder crop, and a new type of industrial raw material crop. The lack of genomic resources could affect the process of industrialization of sweet potato. Few detailed reports have been completed on the mitochondrial genome of sweet potato. In this research, we sequenced and assembled the mitochondrial genome of sweet potato and investigated its substructure. The mitochondrial genome of sweet potato is 270,304 bp with 23 unique core genes and 12 variable genes. We detected 279 pairs of repeat sequences and found that three pairs of direct repeats could mediate the homologous recombination into four independent circular molecules. We identified 70 SSRs in the whole mitochondrial genome of sweet potato. The longest dispersed repeat in mitochondrial genome was a palindromic repeat with a length of 915 bp. The homologous fragments between the chloroplast and mitochondrial genome account for 7.35% of the mitochondrial genome. We also predicted 597 RNA editing sites and found that the rps3 gene was edited 54 times, which occurred most frequently. This study further demonstrates the existence of multiple conformations in sweet potato mitochondrial genomes and provides a theoretical basis for the evolution of higher plants and cytoplasmic male sterility breeding.
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Affiliation(s)
- Zhijian Yang
- Key Laboratory of Crop Biotechnology, Fujian Agriculture and Forestry University, Fujian Province Universities, Fuzhou, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yang Ni
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Zebin Lin
- Key Laboratory of Crop Biotechnology, Fujian Agriculture and Forestry University, Fujian Province Universities, Fuzhou, China
| | - Liubin Yang
- Key Laboratory of Crop Biotechnology, Fujian Agriculture and Forestry University, Fujian Province Universities, Fuzhou, China
| | - Guotai Chen
- Key Laboratory of Crop Biotechnology, Fujian Agriculture and Forestry University, Fujian Province Universities, Fuzhou, China
| | - Nuerla Nijiati
- Key Laboratory of Crop Biotechnology, Fujian Agriculture and Forestry University, Fujian Province Universities, Fuzhou, China
| | - Yunzhuo Hu
- Key Laboratory of Crop Biotechnology, Fujian Agriculture and Forestry University, Fujian Province Universities, Fuzhou, China
| | - Xuanyang Chen
- Key Laboratory of Crop Biotechnology, Fujian Agriculture and Forestry University, Fujian Province Universities, Fuzhou, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Provincial Key Laboratory of Crop Breeding by Design, Fuzhou, Fujian China
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27
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Jia L, Wu H, Wang Y, Li H. First Report of the Root-Knot Nematode Meloidogyne enterolobii on Sweet Potato in Guangxi Province, China. Plant Dis 2022; 106:1308. [PMID: 34752127 DOI: 10.1094/pdis-08-21-1793-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- Luming Jia
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, China
| | - Haiyan Wu
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, China
| | - Yong Wang
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, China
| | - Huifeng Li
- Maize Research Institute, Guangxi Academy of Agricultural Sciences
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28
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Mello AFS, Silva G, de Sousa RL, Barbosa AVS, Nakasu EYT, Silva GO, Biscaia D, Pinheiro JB. Sweetpotato Genotypes 'CIP BRS Nuti' and 'Canadense' Are Resistant to Meloidogyne incognita, M. javanica, and M. enterolobii. Plant Dis 2022; 106:1238-1243. [PMID: 34818914 DOI: 10.1094/pdis-06-21-1194-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Sweetpotato is a staple crop in Brazil presenting a smaller number of pathogens and diseases in comparison with other root and tuberous crops. Root-knot nematodes are among the most serious sweetpotato root pathogens. The impact of these pathogens also extends to succeeding crops. Because in Brazil, it is common to cultivate more than one crop per season, this problem is rapidly disseminated. The aim of this study was to assess the resistance of two sweetpotato clones and four commercial sweetpotato genotypes to three different Meloidogyne species. Assays were performed under greenhouse and field conditions. 'CIP BRS Nuti' and 'Canadense' were resistant to Meloidogyne incognita, M. javanica, and M. enterolobii under greenhouse conditions. This finding was obtained based on the reproduction factor < 0.2, meaning that the initial population of 5,000 nematodes was reduced to <1,000 individuals after 90 days of inoculation. Tomato and sweetpotato cultivar Beauregard, known to be susceptible to the three nematode species, were highly damaged by the pathogens. Similar results were also observed under field conditions. To our knowledge, 'CIP BRS Nuti' and 'Canadense' are the first South American commercial cultivars with triple nematode resistance.
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29
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Cui R, Zhu F. Changes in structure and phenolic profiles during processing of steamed bread enriched with purple sweetpotato flour. Food Chem 2022; 369:130578. [PMID: 34479007 DOI: 10.1016/j.foodchem.2021.130578] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 06/20/2021] [Accepted: 07/08/2021] [Indexed: 12/15/2022]
Abstract
Purple-fleshed sweetpotato is a rich source of antioxidants such as polyphenols. Chinese steamed bread (CSB) is a popular food product for many people. The effect of CSB making process on the structure and phenolic profiles of CSB enriched with purple sweetpotato flour (PSPF) at different concentrations was investigated. The mixing process greatly reduced the gluten strength due to the incorporation of PSPF. The addition of PSPF induced extensive structural modification on CSB due to the starch-polyphenol and protein-polyphenol interactions. The total phenolic contents, in vitro antioxidant activity, and the contents of hydroxycinnamic acid derivatives were decreased by fermentation and proofing, but they were increased after steaming and storage. The anthocyanins were significantly degraded during the CSB making process. The textural and structural properties of CSB were significantly affected by the PSPF substitutions. The results of this study are useful to develop functional CSB with improved nutritional quality and phenolic profiles.
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Affiliation(s)
- Rongbin Cui
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Fan Zhu
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
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30
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Tanaka A, Ryder MH, Suzuki T, Uesaka K, Yamaguchi N, Amimoto T, Otani M, Nakayachi O, Arakawa K, Tanaka N, Takemoto D. Production of Agrocinopine A by Ipomoea batatas Agrocinopine Synthase in Transgenic Tobacco and Its Effect on the Rhizosphere Microbial Community. Mol Plant Microbe Interact 2022; 35:73-84. [PMID: 34585955 DOI: 10.1094/mpmi-05-21-0114-r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Agrobacterium tumefaciens is a bacterial pathogen that causes crown gall disease on a wide range of eudicot plants by genetic transformation. Besides T-DNA integrated by natural transformation of plant vegetative tissues by pathogenic Agrobacterium spp., previous reports have indicated that T-DNA sequences originating from an ancestral Agrobacterium sp. are present in the genomes of all cultivated sweet potato (Ipomoea batatas) varieties analyzed. Expression of an Agrobacterium-derived agrocinopine synthase (ACS) gene was detected in leaf and root tissues of sweet potato, suggesting that the plant can produce agrocinopine, a sugar-phosphodiester opine considered to be utilized by some strains of Agrobacterium spp. in crown gall. To validate the product synthesized by Ipomoea batatas ACS (IbACS), we introduced IbACS into tobacco under a constitutive promoter. High-voltage paper electrophoresis followed by alkaline silver nitrate staining detected the production of an agrocinopine-like substance in IbACS1-expressing tobacco, and further mass spectrometry and nuclear magnetic resonance analyses of the product confirmed that IbACS can produce agrocinopine A from natural plant substrates. The partially purified compound was biologically active in an agrocinopine A bioassay. A 16S ribosomal RNA amplicon sequencing and meta-transcriptome analysis revealed that the rhizosphere microbial community of tobacco was affected by the expression of IbACS. A new species of Leifsonia (actinobacteria) was isolated as an enriched bacterium in the rhizosphere of IbACS1-expressing tobacco. This Leifsonia sp. can catabolize agrocinopine A produced in tobacco, indicating that the production of agrocinopine A attracts rhizosphere bacteria that can utilize this sugar-phosphodiester. These results suggest a potential role of IbACS conserved among sweet potato cultivars in manipulating their microbial community.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Aiko Tanaka
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Maarten H Ryder
- School of Agriculture, Food & Wine, The University of Adelaide, Glen Osmond, South Australia 5064, Australia
| | - Takamasa Suzuki
- College of Bioscience and Biotechnology, Chubu University, Kasugai, Aichi 478-8501, Japan
| | - Kazuma Uesaka
- Center for Gene Research, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Nobuo Yamaguchi
- Natural Science Center for Basic Research and Development, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Tomoko Amimoto
- Natural Science Center for Basic Research and Development, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Motoyasu Otani
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Ishikawa 921-8836, Japan
| | - Osamu Nakayachi
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Ishikawa 921-8836, Japan
| | - Kenji Arakawa
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8530, Japan
| | - Nobukazu Tanaka
- Natural Science Center for Basic Research and Development, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Daigo Takemoto
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
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Naomi R, Bahari H, Yazid MD, Othman F, Zakaria ZA, Hussain MK. Potential Effects of Sweet Potato ( Ipomoea batatas) in Hyperglycemia and Dyslipidemia-A Systematic Review in Diabetic Retinopathy Context. Int J Mol Sci 2021; 22:10816. [PMID: 34639164 PMCID: PMC8509747 DOI: 10.3390/ijms221910816] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 08/29/2021] [Accepted: 09/06/2021] [Indexed: 12/15/2022] Open
Abstract
Hyperglycemia is a condition with high glucose levels that may result in dyslipidemia. In severe cases, this alteration may lead to diabetic retinopathy. Numerous drugs have been approved by officials to treat these conditions, but usage of any synthetic drugs in the long term will result in unavoidable side effects such as kidney failure. Therefore, more emphasis is being placed on natural ingredients due to their bioavailability and absence of side effects. In regards to this claim, promising results have been witnessed in the usage of Ipomoea batatas (I. batatas) in treating the hyperglycemic and dyslipidemic condition. Thus, the aim of this paper is to conduct an overview of the reported effects of I. batatas focusing on in vitro and in vivo trials in reducing high glucose levels and regulating the dyslipidemic condition. A comprehensive literature search was performed using Scopus, Web of Science, Springer Nature, and PubMed databases to identify the potential articles on particular topics. The search query was accomplished based on the Boolean operators involving keywords such as (1) Beneficial effect OR healing OR intervention AND (2) sweet potato OR Ipomoea batatas OR traditional herb AND (3) blood glucose OR LDL OR lipid OR cholesterol OR dyslipidemia. Only articles published from 2011 onwards were selected for further analysis. This review includes the (1) method of intervention and the outcome (2) signaling mechanism involved (3) underlying mechanism of action, and the possible side effects observed based on the phytoconstiuents isolated. The comprehensive literature search retrieved a total of 2491 articles using the appropriate keywords. However, on the basis of the inclusion and exclusion criteria, only 23 articles were chosen for further review. The results from these articles indicate that I. batatas has proven to be effective in treating the hyperglycemic condition and is able to regulate dyslipidemia. Therefore, this systematic review summarizes the signaling mechanism, mechanism of action, and phytoconstituents responsible for those activities of I. batatas in treating hyperglycemic based on the in vitro and in vivo study.
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Affiliation(s)
- Ruth Naomi
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (R.N.); (H.B.)
| | - Hasnah Bahari
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (R.N.); (H.B.)
| | - Muhammad Dain Yazid
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia;
| | - Fezah Othman
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Zainul Amiruddin Zakaria
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia;
- Halal Product Development Unit, Halal Product Research Institute, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Mohd Khairi Hussain
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
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Rutter WB, Wadl PA, Mueller JD, Agudelo P. Identification of Sweet Potato Germplasm Resistant to Pathotypically Distinct Isolates of Meloidogyne enterolobii from the Carolinas. Plant Dis 2021; 105:3147-3153. [PMID: 33599516 DOI: 10.1094/pdis-02-20-0379-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Meloidogyne enterolobii (syn. mayaguensis) is an emergent species of root-knot nematode that has become a serious threat to sweet potato (Ipomoea batatas) production in the southeastern United States. The most popular sweet potato cultivars grown in this region are highly susceptible to M. enterolobii. As a result, this pest has spread across most of the sweet potato growing counties in the Carolinas, threatening the industry as well as other crops in the region. The development and release of new sweet potato cultivars with resistance to M. enterolobii would help to manage and slow the spread of this pest. To support sweet potato resistance breeding efforts, 93 accessions selected from the U.S. Department of Agriculture germplasm collection and breeding programs in the United States were screened to identify 19 lines with strong resistance to M. enterolobii. The resistance in these accessions was tested against two M. enterolobii isolates that were collected from sweet potato production fields in the Carolinas. These isolates were found to have distinct pathotypes, with galling and nematode reproduction differences observed on cotton as well as sweet potato. This study is the first report of intraspecific pathotypic variation in M. enterolobii, and it identifies sweet potato germplasm with resistance against both pathogenic variants of this nematode.
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Affiliation(s)
| | - Phillip A Wadl
- USDA-ARS U.S. Vegetable Laboratory, Charleston, SC 29414
| | - John D Mueller
- Edisto Research and Education Center, Department of Plant and Environmental Sciences, Clemson University, Blackville, SC 29817
| | - Paula Agudelo
- Department of Plant and Environmental Sciences, Clemson University, Clemson, SC 29634
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Lai JL, Liu ZW, Li C, Luo XG. Analysis of accumulation and phytotoxicity mechanism of uranium and cadmium in two sweet potato cultivars. J Hazard Mater 2021; 409:124997. [PMID: 33421877 DOI: 10.1016/j.jhazmat.2020.124997] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 12/27/2020] [Accepted: 12/28/2020] [Indexed: 05/25/2023]
Abstract
The purpose of this study was to reveal the accumulation and phytotoxicity mechanism of sweet potato (Ipomoea batatas L.) roots following exposure to toxic levels of uranium (U) and cadmium (Cd). We selected two accumulation-type sweet potato cultivars as experimental material. The varietal differences in U and Cd accumulation and physiological metabolism were analyzed by a hydroponic experiment. High concentrations of U and Cd inhibited the growth and development of sweet potato and damaged the microstructure of root. The roots were the main accumulating organs of U and Cd in both sweet potato. Root cell walls and vacuoles (soluble components) were the main distribution sites of U and Cd. The chemical forms of U in the two sweet potato varieties were insoluble and oxalate compounds, while Cd mainly combined with pectin and protein. U and Cd changed the normal mineral nutrition metabolism in the roots, and also significantly inhibited the photosynthetic metabolism of sweet potatoes. RNA-seq showed that the cell wall and plant hormone signal transduction pathways responded to either U or Cd toxicity in both varieties. The inorganic ion transporter and organic compound transporter in roots of both sweet potato varieties are sensitive to U and Cd toxicity.
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Affiliation(s)
- Jin-Long Lai
- College of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, China; School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Ze-Wei Liu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Chen Li
- College of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, China; College of Chemical and Environment Science, Shaanxi University of Technology, Hanzhong 723000, China
| | - Xue-Gang Luo
- College of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, China; School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China.
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Allan MC, Marinos N, Johanningsmeier SD, Sato A, Truong VD. Relationships between isolated sweetpotato starch properties and textural attributes of sweetpotato French fries. J Food Sci 2021; 86:1819-1834. [PMID: 33890302 DOI: 10.1111/1750-3841.15725] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 03/02/2021] [Accepted: 03/17/2021] [Indexed: 11/30/2022]
Abstract
Sweetpotato French fry (SPFF) textures have been associated with dry matter and starch contents, but these do not fully account for all textural differences. This study investigated the relationships between the physicochemical properties of sweetpotato starch and textural attributes of sweetpotato fries. Starches from 16 sweetpotato genotypes that varied in dry matter content were isolated and analyzed. The amylose content, pasting temperatures and viscosities, and textural properties of equilibrated starch gels were measured. Correlational analysis was performed with the respective SPFF mechanical and sensory texture attributes. Sweetpotato starch amylose content ranged from 17.3% to 21.1%, and the pasting and gel textural properties varied significantly between starches. Starch from orange-fleshed sweetpotatoes had lower pasting temperatures than starches from yellow/cream-fleshed genotypes, 72.2 ± 2.0 and 75.5 ± 1.1 °C, respectively. Notable inverse correlations were observed between the starch pasting temperature and perceived moistness (r = -0.63) and fibrousness (r = -0.70) of fries, whereas SPFF denseness was positively associated with starch pasting viscosity (r = 0.60) and nonstarch alcohol-insoluble solids content. Fry textures were likely affected by cooked starch properties, which should be considered when selecting varieties for sweetpotato fries. PRACTICAL APPLICATION: Without the aid of a batter, sweetpotato French fries (SPFFs) tend to be soft and limp-undesirable attributes in a fried food. The physiochemical properties of starch, the most abundant component in sweetpotato fries, were further explored in this study to better understand the properties of sweetpotato starch that influence SPFF textures. These findings can be used by sweetpotato processors and breeders for developing new sweetpotato varieties that are designed for production of fried products with desirable textures.
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Affiliation(s)
- Matthew C Allan
- Food Science and Market Quality and Handling Research Unit, United States Department of Agriculture - Agricultural Research Service, Raleigh, North Carolina, USA
| | - Nicholas Marinos
- Food Science and Market Quality and Handling Research Unit, United States Department of Agriculture - Agricultural Research Service, Raleigh, North Carolina, USA
| | - Suzanne D Johanningsmeier
- Food Science and Market Quality and Handling Research Unit, United States Department of Agriculture - Agricultural Research Service, Raleigh, North Carolina, USA
| | - Ai Sato
- Department of Food, Bioprocessing, and Nutrition Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Van-Den Truong
- Food Science and Market Quality and Handling Research Unit, United States Department of Agriculture - Agricultural Research Service, Raleigh, North Carolina, USA.,Department of Food, Bioprocessing, and Nutrition Sciences, North Carolina State University, Raleigh, North Carolina, USA
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35
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Schwarz TR, Li C, Yencho GC, Pecota KV, Heim CR, Davis EL. Screening Sweetpotato Genotypes for Resistance to a North Carolina Isolate of Meloidogyne enterolobii. Plant Dis 2021; 105:1101-1107. [PMID: 32880532 DOI: 10.1094/pdis-02-20-0389-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Potential resistance to the guava root-knot nematode, Meloidogyne enterolobii, in 91 selected sweetpotato (Ipomoea batatas [L.] Lam.) genotypes was evaluated in six greenhouse experiments. Ten thousand eggs of M. enterolobii were inoculated on each sweetpotato genotype grown in a 3:1 sand to soil mixture. Sixty days after inoculation, the percentage of total roots with nematode-induced galls was determined, and nematode eggs were extracted from roots. Significant differences (P < 0.001) between sweetpotato genotypes were found in all six tests for gall rating, total eggs, and eggs per gram of root. Resistant sweetpotato genotypes were calculated as final eggs per root system divided by the initial inoculum, where Pf/Pi < 1 (reproduction factor; final egg count divided by initial inoculum of 10,000 eggs), and statistical mean separations were confirmed by Fisher's least significant difference t test. Our results indicated that 19 out of 91 tested sweetpotato genotypes were resistant to M. enterolobii. Some of the susceptible genotypes included 'Covington,' 'Beauregard,' 'NCDM04-001', and 'Hernandez.' Some of the resistant sweetpotato genotypes included 'Tanzania,' 'Murasaki-29,' 'Bwanjule,' 'Dimbuka-Bukulula,' 'Jewel,' and 'Centennial.' Most of the 19 resistant sweetpotato genotypes supported almost no M. enterolobii reproduction, with <20 eggs/g root of M. enterolobii. A number of segregants from a 'Tanzania' × 'Beauregard' cross demonstrated strong resistance to M. enterolobii observed in the 'Tanzania' parent. In collaboration with North Carolina State University sweetpotato breeding program, several genotypes evaluated in these tests are being used to incorporate the observed resistance to M. enterolobii into commercial sweetpotato cultivars.
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Affiliation(s)
- Tanner R Schwarz
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC 27695
| | - Chunying Li
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC 27695
| | - G Craig Yencho
- Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695
| | - Kenneth V Pecota
- Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695
| | - Chris R Heim
- Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695
| | - Eric L Davis
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC 27695
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Zou H, Zhang X, Chen J, Wang Z, Huang L, Fang B. Complete chloroplast genome of a novel chlorophyll-deficient mutant ( clm) in sweetpotato ( Ipomoea batatas L.). Mitochondrial DNA B Resour 2021; 6:968-969. [PMID: 33796701 PMCID: PMC7995816 DOI: 10.1080/23802359.2020.1869616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The complete chloroplast genome of a novel chlorophyll-deficient mutant (clm) and its wild type (WT) in sweetpotato (Ipomoea batatas L.) was sequenced. The complete chloroplast genome of clm and WT was 161,393 bp and 161,429 bp in length, containing a large single copy (LSC) region of 87,561 bp and 87,597 bp, respectively, a small single copy (SSC) region with the same length of 30,890 bp and a pair of inverted repeat regions (IRs) with the same length of 12,052 bp. Both of them contained 132 genes including 87 protein-coding sequences, 37 tRNA, and eight rRNA. Comparing to the WT, four SNPs and three INDELs were detected and only one INDEL in the exon affecting the translation of rpoA gene. Phylogenetic analysis showed that clm and WT were closely related to Ipomoea tabascana. The complete chloroplast genome of clm and its WT will play a role in understanding the molecular mechanism of chlorophyll deficiency and developing molecular markers in sweetpotato.
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Affiliation(s)
- Hongda Zou
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement, Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Xiongjian Zhang
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement, Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Jingyi Chen
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement, Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Zhangying Wang
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement, Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Lifei Huang
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement, Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Boping Fang
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement, Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
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Ntchapda F, Tchatchouang FC, Miaffo D, Maidadi B, Vecchio L, Talla RE, Bonabe C, Seke Etet PF, Dimo T. Hypolipidemic and anti-atherosclerogenic effects of aqueous extract of Ipomoea batatas leaves in diet-induced hypercholesterolemic rats. J Integr Med 2021; 19:243-250. [PMID: 33775599 DOI: 10.1016/j.joim.2021.02.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 06/15/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Ipomoea batatas (L.) Lam. is a food plant used in African traditional medicine to treat cardiovascular diseases and related conditions. We assessed the hypolipidemic and anti-atherosclerogenic properties of the aqueous extract of I. batatas leaves in a rat model of diet-induced hypercholesterolemia. METHODS Hypercholesterolemia was induced in male Wistar rats by exclusive feeding with a cholesterol-enriched (1%) standard diet for four weeks. Then, rats were treated once daily (per os) with I. batatas extract at doses of 400, 500 and 600 mg/kg or with atorvastatin (2 mg/kg), for four weeks. Following treatment, animals were observed for another four weeks and then sacrificed. Aortas were excised and processed for histopathological studies, and blood glucose level and lipid profile were measured. RESULTS Hypercholesterolemic animals experienced a 21.5% faster increase in body weight, significant increases in blood glucose and blood lipids (148.94% triglycerides, 196.97% high-density lipoprotein cholesterol, 773.04% low-density lipoprotein cholesterol, 148.93% very low-density lipoprotein cholesterol and 210.42% total cholesterol), and increases in aorta thickness and atherosclerotic plaque sizes compared to rats fed standard diet. Treatment of hypercholesterolemic rats with the extract mitigated these alterations and restored blood glucose and blood lipid levels to normocholesterolemic values. CONCLUSION Our findings suggest that I. batatas leaves have hypolipidemic and anti-atherosclerogenic properties and justify their use in traditional medicine.
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Affiliation(s)
- Fidele Ntchapda
- Department of Biological Sciences, University of Ngaoundere, Ngaoundere, Adamawa Region, Cameroon.
| | - Fernand C Tchatchouang
- Department of Biological Sciences, University of Ngaoundere, Ngaoundere, Adamawa Region, Cameroon
| | - David Miaffo
- Department of Life and Earth Sciences, Higher Teachers' Training College, University of Maroua, Extreme North Region, Cameroon
| | - Barthelemy Maidadi
- Department of Biological Sciences, University of Ngaoundere, Ngaoundere, Adamawa Region, Cameroon
| | - Lorella Vecchio
- Center for Sustainable Health and Development, Garoua, North Region, Cameroon
| | - Rodrigue E Talla
- Department of Biological Sciences, University of Ngaoundere, Ngaoundere, Adamawa Region, Cameroon
| | - Christian Bonabe
- Department of Biological Sciences, University of Ngaoundere, Ngaoundere, Adamawa Region, Cameroon
| | - Paul F Seke Etet
- Center for Sustainable Health and Development, Garoua, North Region, Cameroon; Department of Physiological Sciences and Biochemistry, Faculty of Medicine and Biomedical Sciences, University of Ngaoundere, Garoua, North Region, Cameroon
| | - Theophile Dimo
- Department of Animal Biology and Physiology, University of Yaoundé 1, Yaoundé, Centre Region, Cameroon
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38
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Dery EK, Carey EE, Ssali RT, Low JW, Johanningsmeier SD, Oduro I, Boakye A, Omodamiro RM, Yusuf HL. Sensory characteristics and consumer segmentation of fried sweetpotato for expanded markets in Africa. Int J Food Sci Technol 2021; 56:1419-1431. [PMID: 33776243 PMCID: PMC7984081 DOI: 10.1111/ijfs.14847] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 10/06/2020] [Indexed: 11/28/2022]
Abstract
Prepared foods are increasing in popularity in West Africa alongside rapid urbanisation. Growing demand for fried products calls for targeted breeding efforts to meet consumer needs, but little is known regarding consumer preferences. This research identified the sensory attributes of fried sweetpotato preferred by different consumer groups using a combination of consumer acceptance testing and descriptive sensory analysis. Market and community surveys identified three consumer segments in Ghana and Nigeria with contrasting preferences for fried sweetpotato sensory attributes. One group preferred crispy, crunchy, mealy and sweet fried sweetpotato; another preferred characteristic yam flavour and dry texture; and the third preferred uniform orange colour appearance, ripe plantain flavour and palm nutty flavour. Such consumer segmentation can help emerging West African fried sweetpotato industries identify target markets and provides valuable information to breeders, growers and retailers to prioritise attributes in their breeding, growing or product sourcing decisions.
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Affiliation(s)
- Eric K. Dery
- Department of Food Science and TechnologyKwame Nkrumah University of Science and TechnologyUPO PMBKumasiGhana
- International Potato Center (CIP)Box 38785Femusua, KumasiGhana
| | - Edward E. Carey
- International Potato Center (CIP)Box 38785Femusua, KumasiGhana
| | - Reuben T. Ssali
- International Potato Center (CIP)Box 38785Femusua, KumasiGhana
| | - Jan W. Low
- International Potato Center (CIP)Box 25171Nairobi00603Kenya
| | - Suzanne D. Johanningsmeier
- Agricultural Research Service, Southeast Area Food Science and Market Quality & Handling Research UnitUnited States Department of Agriculture (USDA)RaleighNCUSA
| | - Ibok Oduro
- Department of Food Science and TechnologyKwame Nkrumah University of Science and TechnologyUPO PMBKumasiGhana
| | - Abena Boakye
- Department of Food Science and TechnologyKwame Nkrumah University of Science and TechnologyUPO PMBKumasiGhana
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Silva EMD, Souza Pollo A, Nascimento DD, Ferreira RJ, Duarte SR, Fernandes JPP, Soares PLM. First Report of Root-Knot Nematode Meloidogyne enterolobii Infecting Sweetpotato in the State of Rio Grande do Norte, Brazil. Plant Dis 2021; 105:1571. [PMID: 33434038 DOI: 10.1094/pdis-11-20-2472-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The sweetpotato (Ipomoea batatas L., Convolvulaceae family) originated in Latin America and is currently cultivated worldwide. The storage roots, rich in calories, have made this crop one of the main caloric sources for low-income populations, especially in developing countries. Brazil annually produces about 805,000 tons, with the Northeast region responsible for 34% of this production (Albuquerque et al. 2020). In October 2019, sweetpotato plants cv. Campina, from a field in the region of Touros, state of Rio Grande do Norte (RN), Brazil (5°12'31"S 35°34'42"W), presented deformed storage roots, with galls, typical of root-knot nematodes. The roots were sent to the Nematology Laboratory (LabNema) where 14,032 eggs and 3,312 second-stage juveniles (J2s) of Meloidogyne sp., in 10 g of roots, were recovered. The species of adults was identified through morphological, biochemical, and phylogenetic analysis. The perineal region of females (n = 10) presented an oval shape, with a high and semi-trapezoidal dorsal arch and streak-free perivulval region. The labial region of males (n=10) presented high and rounded head cap, labial region slightly set off from the body, without annulations. The morphological characters were compatible with the original description of Meloidogyne enterolobii (Yang and Eisenback 1983). The phenotype of esterase isoenzymes showed two major bands (VS1-S1) also characteristic of M. enterolobii (Esbenshade and Triantaphyllou 1985). Sequences of 18S rDNA (~1200bp) of individual females (Holterman et al. 2006) obtained from sweetpotatoes before (SPme1 and 2) and after inoculation (SPme3 and 6), and from guava, used as M. enterolobii species control, were submitted to Bayesian analysis. The sequences presented genetic diversity among them resulting from seven SNPs (Single Nucleotide Polymorphism) and 99.4 to 99.9% identity with M. enterolobii sequences deposited in the NCBI GenBank (accession numbers MW209034-MW209039). The pathogenicity test was carried out under greenhouse conditions, in which 3,000 eggs and J2s from the original population isolated of M. enterolobii were inoculated in sweetpotato seedlings cv. Campina (n = 6). After three months, the roots presented galls and deformations typical of root-knot nematodes, while non-inoculated plants did not present any symptoms. An average of 15,900 eggs and J2s of M. enterolobii (RF = 5.3) were recovered from the roots, proving that sweetpotatoes were a host of this species. Meloidogyne enterolobii is known to cause great damage to sweetpotato (Ye et al. 2020). In Brazil, Meloidogyne nematode had been reported once, isolated from a sweetpotato field in the Ceara state and the species suggested by the authors according to esterase electrophoresis was M. enterolobii. Nonetheless, the authors did not present taxonomic, isoenzyme phenotypes and molecular species identification integratively, nor included pathogenicity tests (Silva et al. 2016). Therefore, it is the first time that M. enterolobii, with reliable identification by different methods, including sequencing, was detected in commercial sweetpotato fields in the RN state and in Brazil. The local farmers reported that this nematode deforms the storage roots which make them useless for commercialization, resulting in minimal losses of 50% of production in the infested areas. Furthermore, as sweetpotatoes are vegetatively propagated, the spread of this nematode through planting material is favored. Considering the importance of this crop in Brazil, this report is essential for control measures of this pathogen to be taken in order to avoid its spread to other regions.
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Affiliation(s)
- Edicleide Macedo da Silva
- Sao Paulo State University Julio de Mesquita Filho - Jaboticabal Campus, 207340, Department of Agricultural Production Sciences, Jaboticabal, SP, Brazil;
| | - Andressa Souza Pollo
- Sao Paulo State University Julio de Mesquita Filho - Jaboticabal Campus, 207340, Department of Agricultural Production Sciences, Jaboticabal, SP, Brazil;
| | - Daniel Dalvan Nascimento
- Sao Paulo State University Julio de Mesquita Filho - Jaboticabal Campus, 207340, Department of Agricultural Production Sciences, Jaboticabal, SP, Brazil;
| | - Rivanildo Junior Ferreira
- Sao Paulo State University Julio de Mesquita Filho - Jaboticabal Campus, 207340, Department of Agricultural Production Sciences, Jaboticabal, SP, Brazil;
| | | | - João Pedro Peixoto Fernandes
- Sao Paulo State University Julio de Mesquita Filho - Jaboticabal Campus, 207340, Department of Agricultural Production Sciences, Via de Acesso Prof.Paulo Donato Castellane, Jaboticabal, SP, Brazil, 14884-900;
| | - Pedro Luiz Martins Soares
- Sao Paulo State University Julio de Mesquita Filho - Jaboticabal Campus, 207340, Department of Agricultural Production Sciences, Jaboticabal, SP, Brazil;
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Andreason SA, Olaniyi OG, Gilliard AC, Wadl PA, Williams LH, Jackson DM, Simmons AM, Ling KS. Large-Scale Seedling Grow-Out Experiments Do Not Support Seed Transmission of Sweet Potato Leaf Curl Virus in Sweet Potato. Plants (Basel) 2021; 10:plants10010139. [PMID: 33445460 PMCID: PMC7827154 DOI: 10.3390/plants10010139] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/06/2021] [Accepted: 01/08/2021] [Indexed: 11/25/2022]
Abstract
Sweet potato leaf curl virus (SPLCV) threatens global sweet potato production. SPLCV is transmitted by Bemisia tabaci or via infected vegetative planting materials; however, SPLCV was suggested to be seed transmissible, which is a characteristic that is disputed for geminiviruses. The objective of this study was to revisit the validity of seed transmission of SPLCV in sweet potato. Using large-scale grow-out of sweet potato seedlings from SPLCV-contaminated seeds over 4 consecutive years, approximately 23,034 sweet potato seedlings of 118 genotype entries were evaluated. All seedlings germinating in a greenhouse under insect-proof conditions or in a growth chamber were free of SPLCV; however, a few seedlings grown in an open bench greenhouse lacking insect exclusion tested positive for SPLCV. Inspection of these seedlings revealed that B. tabaci had infiltrated the greenhouse. Therefore, transmission experiments were conducted using B. tabaci MEAM1, demonstrating successful vector transmission of SPLCV to sweet potato. Additionally, tests on contaminated seed coats and germinating cotyledons demonstrated that SPLCV contaminated a high percentage of seed coats collected from infected maternal plants, but SPLCV was never detected in emerging cotyledons. Based on the results of grow-out experiments, seed coat and cotyledon tests, and vector transmission experiments, we conclude that SPLCV is not seed transmitted in sweet potato.
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Abstract
Ceratocystis accommodates many important pathogens of agricultural crops and woody plants. Ceratocystis fimbriata, the type species of the genus is based on a type that is unsuitable for a precise application and interpretation of the species. This is because no culture or DNA data exist for the type specimen. The aim of this study was to select a reference specimen that can serve to stabilize the name of this important fungus. We selected a strain, CBS 114723, isolated from sweet potato in North Carolina, USA, in 1998 for this purpose. The strain was selected based on the availability of a living culture in a public depository. A draft genome sequence is also available for this strain. Its morphological characteristics were studied and compared with the existing and unsuitable type specimen as well as with the original descriptions of C. fimbriata. The selected strain fits the existing concept of the species fully and we have consequently designated it as an epitype to serve as a reference specimen for C. fimbriata.
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Affiliation(s)
- S. Marincowitz
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa
| | - I. Barnes
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa
| | - Z.W. de Beer
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa
| | - M.J. Wingfield
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa
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Chamorro S, Cueva-Mestanza R, de Pascual-Teresa S. Effect of spray drying on the polyphenolic compounds present in purple sweet potato roots: Identification of new cinnamoylquinic acids. Food Chem 2020; 345:128679. [PMID: 33310256 DOI: 10.1016/j.foodchem.2020.128679] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/23/2020] [Accepted: 11/16/2020] [Indexed: 11/25/2022]
Abstract
The effect of spray drying on the different polyphenolic compounds present in the root of a purple-fleshed sweet potato variety of Ipomoea batatas native from Peru was performed by HPLC-QTOF-MSMS. Nine anthocyanins, including four peonidin, three cyanidin and two pelargonidin derivatives glycosylated with sophorose and/or glucose and acylated with caffeic, ferulic and p-hydroxybenzoic acid were identified. Twenty nine cinnamoylquinic acids (CiQA), including eight mono-CiQA, fourteen di-CiQA, and five tri-CiQA, were identified on the base of their MS fragmentation profile. Relevant amounts of feruloylquinic acid derivatives were identified. Among them, some di and tri-CiQAs containing feruloyl and caffeoyl moieties in their structures, and di-feruloylquinic acids were reported here, for the first time, in Ipomoea. Spray drying process negatively affected the different phenolic groups, with polyphenol losses representing around 90% of the initial amounts. Mono-CiQAs presenting feruloyl moieties and mono acylated peonidin derivatives with p-hydroxybenzoic acid were the less affected compounds.
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Affiliation(s)
- Susana Chamorro
- Department of Metabolism and Nutrition, Institute of Food Science, Technology and Nutrition, ICTAN-CSIC, Madrid, Spain.
| | - Ruben Cueva-Mestanza
- Escuela de Farmacia y Bioquímica de la Universidad María Auxiliadora, Lima 36, Lima, Peru
| | - Sonia de Pascual-Teresa
- Department of Metabolism and Nutrition, Institute of Food Science, Technology and Nutrition, ICTAN-CSIC, Madrid, Spain
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Tibiri EB, Pita JS, Tiendrébéogo F, Bangratz M, Néya JB, Brugidou C, Somé K, Barro N. Characterization of virus species associated with sweetpotato virus diseases in Burkina Faso. Plant Pathol 2020; 69:1003-1017. [PMID: 32742024 PMCID: PMC7386933 DOI: 10.1111/ppa.13190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 03/28/2020] [Indexed: 06/11/2023]
Abstract
Sweetpotato (Ipomoea batatas) production in sub-Saharan Africa is severely affected by viral diseases caused by several interacting viruses, including sweet potato feathery mottle virus (SPFMV), sweet potato chlorotic stunt virus (SPCSV), and sweet potato leaf curl virus (SPLCV). However, the aetiology of viral symptoms on sweetpotato is rarely established in most countries in Africa. Here, we aimed to investigate and characterize the incidence of sweetpotato viruses in Burkina Faso. We performed a countrywide survey in 18 districts of Burkina Faso and collected 600 plants, with and without symptoms, from 80 fields. Viral strains were identified using nitrocellulose membrane-ELISA, PCR, and reverse transcription-PCR. Three scions from each of 50 selected plants with symptoms were grafted to healthy Ipomoea setosa and then serological and molecular tests were performed on the 150 recorded samples. Three viruses were detected: 24% of samples were positive for SPFMV, 18% for SPLCV, and 2% for SPCSV. Across all diagnostic tests, 40% of all plant samples were virus-negative. Coinfections were found in 16% of samples. Partial sequences were obtained, including 13 that matched SPFMV, one that matched SPLCV, and one that matched SPCSV. All identified SPFMV isolates belonged to either phylogroup B or A-II. The SPCSV-positive isolates had 98% gene sequence homology with SPCSV-West Africa for the coat protein. Begomovirus-positive isolates clustered with SPLCV-United States. This first study of sweetpotato viral diseases in Burkina Faso indicates widespread occurrence and suggests a need for further epidemiological investigations, breeding programmes focused on virus-resistant varieties, and improved farming practices to control disease spread.
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Affiliation(s)
- Ezechiel B. Tibiri
- Laboratoire de Virologie et de Biotechnologies VégétalesInstitut de l’Environnement et de Recherches Agricoles (INERA)OuagadougouBurkina Faso
- Laboratoire de Génétique et de Biotechnologies VégétalesInstitut de l’Environnement et de Recherches Agricoles (INERA)OuagadougouBurkina Faso
- Laboratoire Mixte International Patho‐BiosIRD‐INERAOuagadougouBurkina Faso
- Laboratoire d’Epidémiologie et de Surveillance des bactéries et virus Transmissibles par les Aliments et l’eauLabESTA/UFR/SVTUniversité Joseph Ki‐ZerboOuagadougouBurkina Faso
| | - Justin S. Pita
- Central and West African Virus Epidemiology (WAVE), Pôle Scientifique et d’innovation de BingervilleUniversité Félix Houphouët‐Boigny (UFHB)BingervilleCôte d’Ivoire
| | - Fidèle Tiendrébéogo
- Laboratoire de Virologie et de Biotechnologies VégétalesInstitut de l’Environnement et de Recherches Agricoles (INERA)OuagadougouBurkina Faso
- Laboratoire Mixte International Patho‐BiosIRD‐INERAOuagadougouBurkina Faso
| | - Martine Bangratz
- Laboratoire Mixte International Patho‐BiosIRD‐INERAOuagadougouBurkina Faso
- Interactions Plants Microorganismes et Environnement (IPME)IRD, CiradUniversité MontpellierMontpellierCedexFrance
| | - James B. Néya
- Laboratoire de Virologie et de Biotechnologies VégétalesInstitut de l’Environnement et de Recherches Agricoles (INERA)OuagadougouBurkina Faso
- Laboratoire Mixte International Patho‐BiosIRD‐INERAOuagadougouBurkina Faso
| | - Christophe Brugidou
- Laboratoire Mixte International Patho‐BiosIRD‐INERAOuagadougouBurkina Faso
- Interactions Plants Microorganismes et Environnement (IPME)IRD, CiradUniversité MontpellierMontpellierCedexFrance
| | - Koussao Somé
- Laboratoire de Génétique et de Biotechnologies VégétalesInstitut de l’Environnement et de Recherches Agricoles (INERA)OuagadougouBurkina Faso
- Laboratoire Mixte International Patho‐BiosIRD‐INERAOuagadougouBurkina Faso
| | - Nicolas Barro
- Laboratoire d’Epidémiologie et de Surveillance des bactéries et virus Transmissibles par les Aliments et l’eauLabESTA/UFR/SVTUniversité Joseph Ki‐ZerboOuagadougouBurkina Faso
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Simões ADN, de Almeida SL, Borges CV, Fonseca KS, Barros Júnior AP, de Albuquerque JRT, Corrêa CR, Minatel IO, Morais MADS, Diamante MS, Lima GPP. Delaying the harvest induces bioactive compounds and maintains the quality of sweet potatoes. J Food Biochem 2020; 44:e13322. [PMID: 32548933 DOI: 10.1111/jfbc.13322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/12/2020] [Accepted: 05/20/2020] [Indexed: 01/30/2023]
Abstract
We have identified the best harvesting periods, related to higher bioactive compound content and post-harvest quality, for minimally processed sweet potatoes with orange pulp and cream pulp. Quality loss in minimally processed sweet potatoes occurred due to browning in cv. Mãe de Familia and ESAM1 and to whitening in cv. Paraná. Both Mãe de Família and ESAM1 presented higher peroxidase and polyphenol oxidase activities at 120 days, and cv. Paraná contained high levels of provitamin A. β-carotene was the major carotenoid (up to 99%) in orange pulp. All cultivars harvested at 150 and 180 days and minimally processed showed the best visual quality, the highest bioactive compound content, and no microbial infection. Delaying the harvest also increase the antioxidant activity in orange roots, which was associated with a high content of carotenoids and phenolic compounds, resulting in an increase in the nutritional quality of the product. PRACTICAL APPLICATIONS: Postharvest techniques can improve the visual and phytochemical quality of vegetables and extend their shelf life. The present research provides the best harvesting periods for minimally processed cream and orange sweet potato roots with higher postharvest qualities. Delaying the harvest resulted in a product with better visual quality, higher levels of bioactive compounds, which are highly beneficial to health, for example, ß-carotene, and no microbiological contamination. Our results may contribute to improvements in the current knowledge about harvesting times for sweet potato growers who aim to produce high quality, minimally processed products with a longer shelf life.
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Affiliation(s)
| | - Samara Lopes de Almeida
- Department of Plant Production, Federal Rural University of Pernambuco, Serra Talhada, Brazil
| | - Cristine Vanz Borges
- Department of Chemistry and Biochemistry, São Paulo State University, Institute of Bioscience, Botucatu, Brazil
| | - Kelem Silva Fonseca
- Department of Plant Production, Federal Rural University of Pernambuco, Serra Talhada, Brazil
| | | | | | - Camila Renata Corrêa
- Department of Pathology, Medical School, São Paulo State University, Botucatu, Brazil
| | - Igor Otavio Minatel
- Department of Chemistry and Biochemistry, São Paulo State University, Institute of Bioscience, Botucatu, Brazil
| | | | - Marla Silvia Diamante
- Department of Chemistry and Biochemistry, São Paulo State University, Institute of Bioscience, Botucatu, Brazil
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Alves Filho EG, Sousa VM, Rodrigues S, de Brito ES, Fernandes FAN. Green ultrasound-assisted extraction of chlorogenic acids from sweet potato peels and sonochemical hydrolysis of caffeoylquinic acids derivatives. Ultrason Sonochem 2020; 63:104911. [PMID: 31952000 DOI: 10.1016/j.ultsonch.2019.104911] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 10/28/2019] [Accepted: 11/27/2019] [Indexed: 05/09/2023]
Abstract
Sweet potato peels are rich in chlorogenic acids. In this work, we applied ultrasound technology to extract the main compounds from sweet potato peel and used multivariate analysis and principal component analysis (PCA) to evaluate the effects of different extraction conditions on the extraction of chlorogenic acids. The extraction was studied varying ultrasonic power density (20, 35 and 50 W/L) and processing time (5, 10, 20 and 40 min) using an ultrasonic bath operating at 25 kHz. The chemical analysis was carried out by UPLC-qTOF-MS, and the results were evaluated by PCA and PLS-DA chemometric analysis. Results show that both ultrasonic power density and processing time influences in the extraction of different chlorogenic acid, and that different extraction conditions can be used to selectively extract specific caffeoylquinic acids and feruloylquinic acids in higher amounts. Ultrasound promoted the hydrolysis of tricaffeoylquinic acid when subjected to ultrasonic waves (20-50 W/L), and of 3,4-caffeyolquinic acid at high ultrasonic power density (50 W/L).
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Affiliation(s)
- Elenilson G Alves Filho
- Universidade Federal do Ceará, Departamento de Engenharia de Alimentos, Campus do Pici, Bloco 851, 60440-900 Fortaleza, CE, Brazil
| | - Valéria M Sousa
- Universidade Federal do Ceará, Departamento de Engenharia Química, Campus do Pici, Bloco 709, 60440-900 Fortaleza, CE, Brazil
| | - Sueli Rodrigues
- Universidade Federal do Ceará, Departamento de Engenharia de Alimentos, Campus do Pici, Bloco 851, 60440-900 Fortaleza, CE, Brazil
| | - Edy S de Brito
- Embrapa Agroindústria Tropical, R. Dra. Sara Mesquita 2270, 60511-110 Fortaleza, CE, Brazil
| | - Fabiano A N Fernandes
- Universidade Federal do Ceará, Departamento de Engenharia Química, Campus do Pici, Bloco 709, 60440-900 Fortaleza, CE, Brazil.
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Kreuze JF, Perez A, Gargurevich MG, Cuellar WJ. Badnaviruses of Sweet Potato: Symptomless Coinhabitants on a Global Scale. Front Plant Sci 2020; 11:313. [PMID: 32300350 PMCID: PMC7145414 DOI: 10.3389/fpls.2020.00313] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Abstract
Sweet potato is among the most important root crops worldwide, particularly in developing countries, and its production is affected severely by a variety of virus diseases. During the last decade, a number of new viruses have been discovered in sweet potatoes through next-generation sequencing studies. Among them are viruses belonging to the genus Badnavirus and collectively assigned to the species sweet potato pakakuy virus (SPPV). We determined the complete genome sequence of two SPPV isolates and show the ubiquitous presence of similar viruses in germplasm and field material from around the globe. We show that SPPV is not integrated into the sweet potato genome, occurs only at extremely low titers, and is efficiently transmitted through seeds and cuttings. They are unaffected by virus elimination therapy and do not induce discernible symptoms in sweet potatoes or indicator host plants. They show considerable variation in their nucleotide sequences and correspond to several genetic lineages. Studies of their interaction with the two most important sweet potato viruses showed only limited synergistic increase in the titers of one of two SPPV isolates. We contend that these viruses may pose little threat to sweet potato production and more likely represent a new type of persistent virus in sweet potato.
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Gouveia CS, Ganança JF, Lebot V, Pinheiro de Carvalho MÂ. Changes in oxalate composition and other nutritive traits in root tubers and shoots of sweet potato (Ipomoea batatas L. [Lam.]) under water stress. J Sci Food Agric 2020; 100:1702-1710. [PMID: 31803935 DOI: 10.1002/jsfa.10185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND The presence of insoluble calcium oxalate druse crystals (CaOx) in sweet potato (Ipomoea batatas) can negatively affect its nutritional quality. Photosynthesis, starch, and protein composition are linked with oxalate synthesis and tuber quality under water scarcity. Our main objective was the oxalate quantitation of sweet potato tubers and shoots and also to assess how drought changes their nutritional value. Eight sweet potato accessions from Madeira, the Canaries and Guinea-Bissau were analyzed for their response to drought stress. Tubers and shoots were analyzed for total (T-Ox), soluble (S-Ox) and insoluble (CaOx) oxalates, protein, chlorophyll content index (CCI), soluble starch, starch swelling power, and starch solubility in water. RESULTS The S-Ox and CaOx content was higher in shoots. Six accessions were above maximum CaOx levels for raw consumption. Accessions with more favorable responses to drought had decreased CaOx with S-Ox increase content for osmoregulation. They also presented slightly decreased CCI and protein contents. These accessions also had an increased shoot starch content, for further tuber storage starch hydrolysis, and maintained the quality and functional properties of the tuber starch grain. Those with a less favorable response to drought had a higher T-Ox and CaOx content in both organs, hindering water absorption. They also had decreased protein and CCI, with a slight increase in tuber starch hydrolysis. CONCLUSION Oxalate content was significantly related to carbohydrate metabolism, CCI, and protein synthesis. This study significantly contributed to the screening of the sweet potato stress response to drought, to adapt this crop to climatic change through breeding programs. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Carla Ss Gouveia
- ISOPlexis Genebank, Faculty of Life Sciences, University of Madeira, Funchal, Portugal
| | - José Ft Ganança
- ISOPlexis Genebank, Faculty of Life Sciences, University of Madeira, Funchal, Portugal
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Yang Y, Shi D, Wang Y, Zhang L, Chen X, Yang X, Xiong H, Bhattarai G, Ravelombola W, Olaoye D, Yang G, Shi A. Transcript profiling for regulation of sweet potato skin color in Sushu8 and its mutant Zhengshu20. Plant Physiol Biochem 2020; 148:1-9. [PMID: 31923733 DOI: 10.1016/j.plaphy.2019.12.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 12/24/2019] [Accepted: 12/26/2019] [Indexed: 06/10/2023]
Abstract
Sweet potato [Ipomoea batatas (L.) Lam.] (2n = 6x = 90) is an economic important autopolyploid species and its varieties differ regarding storage root skin and flesh colors. Two sweet potato genetic lines, Sushu8 (with red skin) and its mutant Zhengshu20, which produced different colored storage roots, were used in this study. The total flavonoid, carotenoid, and anthocyanin contents of the two lines were analyzed and revealed that anthocyanin was primarily responsible for the skin color difference. In addition, the early storage root expanding stage was the key period for anthocyanin accumulation in Sushu8. A total of 24 samples, including the skins of the fibrous root and the storage root at the early and middle expanding stages as well as the flesh of the storage root at the middle expanding stage, were analyzed based on differentially expressed genes identified by transcriptome sequencing and a weighted gene co-expression network analysis. Two gene modules highly related with the regulation of sweet potato skin color through stress responses as well as starch synthesis and glucose metabolism were identified. Furthermore, the WRKY75 transcription factor gene, fructose-bisphosphate aldolase 2 gene, and other DEGs highly related to the regulation of anthocyanin metabolism were enriched in the brown and green modules.
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Affiliation(s)
- Yufeng Yang
- Cereal Crop Institute, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China; Department of Horticulture, University of Arkansas, Fayetteville, AR72701, USA.
| | - Dianyi Shi
- College of Life Sciences, Neijiang Normal University, Neijiang, 641100, China.
| | - Yannan Wang
- Cereal Crop Institute, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
| | - Li Zhang
- Cereal Crop Institute, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
| | - Xiangong Chen
- Cereal Crop Institute, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
| | - Xiaoping Yang
- Cereal Crop Institute, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
| | - Haizheng Xiong
- Department of Horticulture, University of Arkansas, Fayetteville, AR72701, USA.
| | - Gehendra Bhattarai
- Department of Horticulture, University of Arkansas, Fayetteville, AR72701, USA.
| | - Waltram Ravelombola
- Department of Horticulture, University of Arkansas, Fayetteville, AR72701, USA.
| | - Dotun Olaoye
- Department of Horticulture, University of Arkansas, Fayetteville, AR72701, USA.
| | - Guohong Yang
- Cereal Crop Institute, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
| | - Ainong Shi
- Department of Horticulture, University of Arkansas, Fayetteville, AR72701, USA.
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Hossain A, Abdallah Y, Ali MA, Masum MMI, Li B, Sun G, Meng Y, Wang Y, An Q. Lemon-Fruit-Based Green Synthesis of Zinc Oxide Nanoparticles and Titanium Dioxide Nanoparticles against Soft Rot Bacterial Pathogen Dickeya dadantii. Biomolecules 2019; 9:E863. [PMID: 31835898 DOI: 10.3390/biom9120863] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/05/2019] [Accepted: 12/05/2019] [Indexed: 11/30/2022] Open
Abstract
Edible plant fruits are safe raw materials free of toxicants and rich in biomolecules for reducing metal ions and stabilizing nanoparticles. Zinc oxide nanoparticles (ZnONPs) and titanium dioxide nanoparticles (TiO2NPs) are the most produced consumer nanomaterials and have known antibacterial activities but have rarely been used against phytopathogenic bacteria. Here, we synthesized ZnONPs and TiO2NPs simply by mixing ZnO or TiO2 solution with a lemon fruit extract at room temperature and showed their antibacterial activities against Dickeya dadantii, which causes sweet potato stem and root rot disease occurring in major sweet potato planting areas in China. Ultraviolet–visible spectrometry and energy dispersive spectroscopy determined their physiochemical characteristics. Transmission electron microscopy, scanning electron microscopy, and X-ray diffraction spectroscopy revealed the nanoscale size and polymorphic crystalline structures of the ZnONPs and TiO2NPs. Fourier-transform infrared spectroscopy revealed their surface stabilization groups from the lemon fruit extract. In contrast to ZnO and TiO2, which had no antibacterial activity against D. dadantii, ZnONPs and TiO2NPs showed inhibitions on D. dadantii growth, swimming motility, biofilm formation, and maceration of sweet potato tuber slices. ZnONPs and TiO2NPs showed similar extents of antibacterial activities, which increased with the increase of nanoparticle concentrations, and inhibited about 60% of D. dadantii activities at the concentration of 50 µg∙mL−1. The green synthetic ZnONPs and TiO2NPs can be used to control the sweet potato soft rot disease by control of pathogen contamination of seed tubers.
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Gouveia CSS, Ganança JFT, Slaski J, Lebot V, Pinheiro de Carvalho MÂA. Variation of carbon and isotope natural abundances (δ 15N and δ 13C) of whole-plant sweet potato ( Ipomoea batatas L.) subjected to prolonged water stress. J Plant Physiol 2019; 243:153052. [PMID: 31689580 DOI: 10.1016/j.jplph.2019.153052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/25/2019] [Accepted: 07/31/2019] [Indexed: 06/10/2023]
Abstract
Sweet potato (Ipomoea batatas L.) is an important crop in the world, cultivated in temperate climates under low inputs. Drought changes the plant biomass allocation, together with the carbon and nitrogen isotopic composition (δ13C and δ15N), whose changes are faintly known in sweet potato crops. Here, we show the biomass allocation of eight sweet potato accessions submitted to drought during 3 months, using the δ13C, δ15N, carbon isotope discrimination (Δ13C), total carbon (TC) and water use efficiency (WUE) traits. The tolerant accessions had improved WUE, with higher TPB and TC. Storage roots and shoots had a heavier δ13C content under drought stress, with greater 13C fixation in roots. The Δ13C did not show a significant association with WUE. The δ15N values indicated a generalised N reallocation between whole-plant organs under drought, as a physiological integrator of response to environmental stress. This information can aid the selection of traits to be used in sweet potato breeding programs, to adapt this crop to climate change.
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Affiliation(s)
- Carla S S Gouveia
- ISOPlexis Genebank, University of Madeira, Campus da Penteada, 9020-105, Funchal, Madeira, Portugal.
| | - José F T Ganança
- ISOPlexis Genebank, University of Madeira, Campus da Penteada, 9020-105, Funchal, Madeira, Portugal
| | - Jan Slaski
- ISOPlexis Genebank, University of Madeira, Campus da Penteada, 9020-105, Funchal, Madeira, Portugal; Ecosystems and Plant Sciences, InnoTech Alberta, PO Bag 4000, Hwy 16A & 75 Street, Vegreville, Alberta, Canada
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