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Muktadir MA, Merchant A, Sadeque A, Tanveer M, Adhikari KN, Huang L. Carbon isotope and soluble metabolites reflect physiological status among contrasting faba bean genotypes in response to water deficit. FRONTIERS IN PLANT SCIENCE 2022; 13:955406. [PMID: 36186012 PMCID: PMC9523585 DOI: 10.3389/fpls.2022.955406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 07/27/2022] [Indexed: 06/16/2023]
Abstract
Identification and validation of biomarkers and bioindicators to select genotypes with superior tolerance to water deficit (WD) under field conditions are paramount to plant breeding programs. However, the co-occurrence of different abiotic stresses such as WD, heat, and radiation makes it difficult to develop generalized protocols to monitor the physiological health of the plant system. The study assessed the most abundant carbohydrates and sugar alcohols in five faba bean (Vicia faba) genotypes under field conditions and the abundance of naturally occurring carbon isotopes in bulk leaf material to predict water use efficiency (WUE). Plant water status and biomass accumulation were also assessed. Among the accumulated sugars, inter-specific variation in glucose was most prevalent and was found at a higher concentration (8.52 mg g-1 leaf) in rainfed trial. myo-Inositol concentrations followed that of glucose accumulation in that the rainfed trial had higher amounts compared to the irrigated trial. WUE calculated from carbon isotope abundance was consistently offset with measured WUE from measurements of leaf gas exchange. All genotypes demonstrated significant relationships between predicted and measured WUE (p < 0.05) apart from control variety PBA Warda. Thus, bulk leaf-level carbon isotope abundance can be used to calculate WUE and used as an effective selection criterion for improving WUE in faba bean breeding programs under field conditions.
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Affiliation(s)
- Md Abdul Muktadir
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
- International Research Center for Environmental Membrane Biology, College of Food Science and Engineering, Foshan University, Foshan, China
- Faculty of Science, Plant Breeding Institute, The University of Sydney, Sydney, NSW, Australia
- Pulses Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh
| | - Andrew Merchant
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Abdus Sadeque
- Faculty of Science, Plant Breeding Institute, The University of Sydney, Sydney, NSW, Australia
| | - Mohsin Tanveer
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, Australia
| | - Kedar Nath Adhikari
- Faculty of Science, Plant Breeding Institute, The University of Sydney, Sydney, NSW, Australia
| | - Liping Huang
- International Research Center for Environmental Membrane Biology, College of Food Science and Engineering, Foshan University, Foshan, China
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Muktadir MA, Adhikari KN, Ahmad N, Merchant A. Chemical composition and reproductive functionality of contrasting faba bean genotypes in response to water deficit. PHYSIOLOGIA PLANTARUM 2021; 172:540-551. [PMID: 33305355 DOI: 10.1111/ppl.13309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/05/2020] [Accepted: 12/05/2020] [Indexed: 05/11/2023]
Abstract
Water deficit (WD), a major contributor to yield reductions in faba bean (Vicia faba), is a complex phenomenon that varies across daily to seasonal cycles. Several studies have identified various morphological and physiological indicators of WD tolerance, which generally show limited water use during WD. Limited information is available on the impact of WD on nutrient content and reproductive biology of the faba bean. We studied carbohydrates, amino acids, mineral nutrients and the abundance of naturally occurring carbon isotopes (δ13 C) in leaf and grain tissues of faba bean genotypes grown under well-watered (WW) and WD conditions. δ13 C of leaf tissues were found to indicate changes in water use due to WD but this was not reflected in grain tissues. Nutrient concentrations with regard to amino acids and minerals were not influenced by WD. However, carbohydrate accumulation was found to be significant for WD, specifically through the presence of a higher concentration of myo-inositol in WD leaf tissues. Alternatively, sucrose concentration in grain tissues was reduced under WD treatment. WD hampered reproductive functionality by reducing pollen viability and germination with the severity and duration of stress and this reduction was less prominent in the drought-tolerant genotype (AC0805#4912) compared to the sensitive one (11NF010c-4). It was also demonstrated that WD caused developmental impairment in the stamen and pistil, where the pistil appeared more sensitive than stamen. These findings suggest that WD impairs pollen viability and pistil function reducing yield volume, but the nutrient content of the resulting yield is not significantly affected.
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Affiliation(s)
- Md Abdul Muktadir
- Centre for Carbon Water and Food, Faculty of Science, The University of Sydney, Camden, New South Wales, Australia
- IA Watson Grains Research Centre, Faculty of Science, The University of Sydney, Narrabri, New South Wales, Australia
- Pulses Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh
| | - Kedar N Adhikari
- IA Watson Grains Research Centre, Faculty of Science, The University of Sydney, Narrabri, New South Wales, Australia
| | - Nabil Ahmad
- Plant Breeding Institute, Faculty of Science, The University of Sydney, Cobbitty, New South Wales, Australia
| | - Andrew Merchant
- Centre for Carbon Water and Food, Faculty of Science, The University of Sydney, Camden, New South Wales, Australia
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Li C, Huang M, Liu J, Ji S, Zhao R, Zhao D, Sun R. Isotope-based water-use efficiency of major greening plants in a sponge city in northern China. PLoS One 2019; 14:e0220083. [PMID: 31344093 PMCID: PMC6657868 DOI: 10.1371/journal.pone.0220083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 07/07/2019] [Indexed: 11/21/2022] Open
Abstract
To tackle urban water issues, the Chinese government has promoted the construction of sponge cities in recent years. Thirty cities have been designated as experimental sites to serve as models for future sponge city construction, as more than 80% of the built-up urban areas in China must reach the standards of sponge cities by 2030. Greening plants play an important role in sponge cities, and water-use efficiency (WUE) is a vital index to determine whether plants could adapt to and grow healthily in environments with water deficits. In this study, WUE of greening plants was quantified by measuring the stable carbon isotope fractionation. Suitable plants for the green spaces in Guyuan sponge city, in northern China, were selected based on their WUE, and the main factors affecting WUE were studied in four habitats within the city. Plant species identity had the greatest effect on WUE, while habitat and plant life form had lower effect, illustrating that WUE is a relatively stable and reliable index for the classification of plant species. We can improve the WUE and ecological function of green spaces in sponge cities by using isotope technology to select suitable plant species with high WUE. To our knowledge, this study is the first to select plant species for sponge city by using this method, providing a quick and scientific method for the selection of greening plants for future sponge cities.
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Affiliation(s)
- Changchao Li
- Institute of Environmental Research, Shandong University, Qingdao, China
| | - Miansong Huang
- Ningxia Capital Sponge City Construction & Development Co., Ltd, Guyuan, China
- Beijing Capital Co., Ltd, Beijing, China
| | - Jian Liu
- Institute of Environmental Research, Shandong University, Qingdao, China
| | - Shuping Ji
- Institute of Environmental Research, Shandong University, Qingdao, China
| | - Ruiqi Zhao
- Institute of Environmental Research, Shandong University, Qingdao, China
| | - Di Zhao
- Institute of Environmental Research, Shandong University, Qingdao, China
| | - Ruilian Sun
- Institute of Environmental Research, Shandong University, Qingdao, China
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Smith MR, Veneklaas E, Polania J, Rao IM, Beebe SE, Merchant A. Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.). PLoS One 2019; 14:e0217099. [PMID: 31170187 PMCID: PMC6553706 DOI: 10.1371/journal.pone.0217099] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/03/2019] [Indexed: 12/24/2022] Open
Abstract
Drought substantially limits seed yield of common bean (Phaseolus vulgaris L.) in the tropics. Understanding the interaction of drought on yield and the nutrient concentration of the seed is vital in order to supply nutrition to the millions of consumers who rely on common bean as a staple crop. Nevertheless, the impact of drought on common bean for both yield and nutrient concentration has not yet been concurrently investigated in a field environment. Using 10 bred lines developed by CIAT and its partners for their improved adaptation to drought and phosphorus deficiency, this study characterised the impact of drought on yield and nutrient concentration for leaf and seed tissue of common bean grown in the field. Drought significantly reduced leaf area (by ~50%), harvest index (by ~60%), yield (by ~70%), seed weight (by ~25%) and enriched carbon isotope abundance (δ13C) in the seed. Within the soluble leaf fraction, drought significantly decreased the concentration of mineral nutrients and amino acids, whereas no negative effect on the concentration of nutrients and amino acids was detected within the seed. Genotypic variation in nutrient concentration in both the leaf and seed tissue was identified and should be explored further to identify traits that may confer tolerance to abiotic stress.
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Affiliation(s)
- Millicent R. Smith
- Sydney Institute of Agriculture, School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW, Australia
| | - Erik Veneklaas
- School of Plant Biology, The University of Western Australia, Crawley, WA, Australia
| | - Jose Polania
- Centro Internacional de Agricultura Tropical (CIAT), Cali, Colombia
| | | | - Stephen E. Beebe
- Centro Internacional de Agricultura Tropical (CIAT), Cali, Colombia
| | - Andrew Merchant
- Sydney Institute of Agriculture, School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW, Australia
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