1
|
Tominaga T, Ueno K, Saito H, Egusa M, Yamaguchi K, Shigenobu S, Kaminaka H. Monoterpene glucosides in Eustoma grandiflorum roots promote hyphal branching in arbuscular mycorrhizal fungi. PLANT PHYSIOLOGY 2023; 193:2677-2690. [PMID: 37655911 PMCID: PMC10663111 DOI: 10.1093/plphys/kiad482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 08/13/2023] [Indexed: 09/02/2023]
Abstract
Host plant-derived strigolactones trigger hyphal branching in arbuscular mycorrhizal (AM) fungi, initiating a symbiotic interaction between land plants and AM fungi. However, our previous studies revealed that gibberellin-treated lisianthus (Eustoma grandiflorum, Gentianaceae) activates rhizospheric hyphal branching in AM fungi using unidentified molecules other than strigolactones. In this study, we analyzed independent transcriptomic data of E. grandiflorum and found that the biosynthesis of gentiopicroside (GPS) and swertiamarin (SWM), characteristic monoterpene glucosides in Gentianaceae, was upregulated in gibberellin-treated E. grandiflorum roots. Moreover, these metabolites considerably promoted hyphal branching in the Glomeraceae AM fungi Rhizophagus irregularis and Rhizophagus clarus. GPS treatment also enhanced R. irregularis colonization of the monocotyledonous crop chive (Allium schoenoprasum). Interestingly, these metabolites did not provoke the germination of the root parasitic plant common broomrape (Orobanche minor). Altogether, our study unveiled the role of GPS and SWM in activating the symbiotic relationship between AM fungi and E. grandiflorum.
Collapse
Affiliation(s)
- Takaya Tominaga
- The United Graduate School of Agricultural Science, Tottori University, Tottori 680-8553, Japan
| | - Kotomi Ueno
- Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Hikaru Saito
- Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Mayumi Egusa
- Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Katsushi Yamaguchi
- Functional Genomics Facility, NIBB Core Research Facilities, National Institute for Basic Biology, Okazaki 444-8585, Japan
| | - Shuji Shigenobu
- Functional Genomics Facility, NIBB Core Research Facilities, National Institute for Basic Biology, Okazaki 444-8585, Japan
| | - Hironori Kaminaka
- Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
- Unused Bioresource Utilization Center, Tottori University, Tottori 680-8550, Japan
| |
Collapse
|
2
|
Korek M, Marzec M. Strigolactones and abscisic acid interactions affect plant development and response to abiotic stresses. BMC PLANT BIOLOGY 2023; 23:314. [PMID: 37308831 DOI: 10.1186/s12870-023-04332-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 06/06/2023] [Indexed: 06/14/2023]
Abstract
Strigolactones (SL) are the youngest group of plant hormones responsible for shaping plant architecture, especially the branching of shoots. However, recent studies provided new insights into the functioning of SL, confirming their participation in regulating the plant response to various types of abiotic stresses, including water deficit, soil salinity and osmotic stress. On the other hand, abscisic acid (ABA), commonly referred as a stress hormone, is the molecule that crucially controls the plant response to adverse environmental conditions. Since the SL and ABA share a common precursor in their biosynthetic pathways, the interaction between both phytohormones has been largely studied in the literature. Under optimal growth conditions, the balance between ABA and SL content is maintained to ensure proper plant development. At the same time, the water deficit tends to inhibit SL accumulation in the roots, which serves as a sensing mechanism for drought, and empowers the ABA production, which is necessary for plant defense responses. The SL-ABA cross-talk at the signaling level, especially regarding the closing of the stomata under drought conditions, still remains poorly understood. Enhanced SL content in shoots is likely to stimulate the plant sensitivity to ABA, thus reducing the stomatal conductance and improving the plant survival rate. Besides, it was proposed that SL might promote the closing of stomata in an ABA-independent way. Here, we summarize the current knowledge regarding the SL and ABA interactions by providing new insights into the function, perception and regulation of both phytohormones during abiotic stress response of plants, as well as revealing the gaps in the current knowledge of SL-ABA cross-talk.
Collapse
Affiliation(s)
- Magdalena Korek
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, Katowice, 40-032, Poland.
| | - Marek Marzec
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, Katowice, 40-032, Poland
| |
Collapse
|
3
|
Meena M, Nagda A, Mehta T, Yadav G, Sonigra P. Mechanistic basis of the symbiotic signaling pathway between the host and the pathogen. PLANT-MICROBE INTERACTION - RECENT ADVANCES IN MOLECULAR AND BIOCHEMICAL APPROACHES 2023:375-387. [DOI: 10.1016/b978-0-323-91875-6.00001-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
|
4
|
Soliman S, Wang Y, Han Z, Pervaiz T, El-kereamy A. Strigolactones in Plants and Their Interaction with the Ecological Microbiome in Response to Abiotic Stress. PLANTS (BASEL, SWITZERLAND) 2022; 11:3499. [PMID: 36559612 PMCID: PMC9781102 DOI: 10.3390/plants11243499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Phytohormones play an essential role in enhancing plant tolerance by responding to abiotic stresses, such as nutrient deficiency, drought, high temperature, and light stress. Strigolactones (SLs) are carotenoid derivatives that occur naturally in plants and are defined as novel phytohormones that regulate plant metabolism, growth, and development. Strigolactone assists plants in the acquisition of defensive characteristics against drought stress by initiating physiological responses and mediating the interaction with soil microorganisms. Nutrient deficiency is an important abiotic stress factor, hence, plants perform many strategies to survive against nutrient deficiency, such as enhancing the efficiency of nutrient uptake and forming beneficial relationships with microorganisms. Strigolactone attracts various microorganisms and provides the roots with essential elements, including nitrogen and phosphorus. Among these advantageous microorganisms are arbuscular mycorrhiza fungi (AMF), which regulate plant metabolic activities through phosphorus providing in roots. Bacterial nodulations are also nitrogen-fixing microorganisms found in plant roots. This symbiotic relationship is maintained as the plant provides organic molecules, produced in the leaves, that the bacteria could otherwise not independently generate. Related stresses, such as light stress and high-temperature stress, could be affected directly or indirectly by strigolactone. However, the messengers of these processes are unknown. The most prominent connector messengers have been identified upon the discovery of SLs and the understanding of their hormonal effect. In addition to attracting microorganisms, these groups of phytohormones affect photosynthesis, bridge other phytohormones, induce metabolic compounds. In this article, we highlighted the brief information available on SLs as a phytohormone group regarding their common related effects. In addition, we reviewed the status and described the application of SLs and plant response to abiotic stresses. This allowed us to comprehend plants' communication with the ecological microbiome as well as the strategies plants use to survive under various stresses. Furthermore, we identify and classify the SLs that play a role in stress resistance since many ecological microbiomes are unexplained.
Collapse
Affiliation(s)
- Sabry Soliman
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA
- Department of Horticulture, Faculty of Agriculture, Ain Shams University, Cairo 11566, Egypt
- Department of Fruit Science, College of Horticulture, China Agriculture University, Beijing 100083, China
| | - Yi Wang
- Department of Fruit Science, College of Horticulture, China Agriculture University, Beijing 100083, China
| | - Zhenhai Han
- Department of Fruit Science, College of Horticulture, China Agriculture University, Beijing 100083, China
| | - Tariq Pervaiz
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA
| | - Ashraf El-kereamy
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA
| |
Collapse
|
5
|
Kleman J, Matusova R. Strigolactones: Current research progress in the response of plants to abiotic stress. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01230-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
Chen Y, Kuang Y, Shi L, Wang X, Fu H, Yang S, Sampietro DA, Huang L, Yuan Y. Synthesis and Evaluation of New Halogenated GR24 Analogs as Germination Promotors for Orobanche cumana. FRONTIERS IN PLANT SCIENCE 2021; 12:725949. [PMID: 34603353 PMCID: PMC8484532 DOI: 10.3389/fpls.2021.725949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
Orobanche and Striga are parasitic weeds extremely well adapted to the life cycle of their host plants. They cannot be eliminated by conventional weed control methods. Suicidal germination induced by strigolactones (SLs) analogs is an option to control these weeds. Here, we reported two new halogenated (+)-GR24 analogs, named 7-bromo-GR24 (7BrGR24) and 7-fluoro-GR24 (7FGR24), which were synthesized using commercially available materials following simple steps. Both compounds strongly promoted seed germination of Orobanche cumana. Their EC50 values of 2.3±0.28×10-8M (7BrGR24) and 0.97±0.29×10-8M (7FGR24) were 3- and 5-fold lower, respectively, than those of (+)-GR24 and rac-GR24 (EC50=5.1±1.32-5.3±1.44×10-8; p<0.05). The 7FGR24 was the strongest seed germination promoter tested, with a stimulation percentage of 62.0±9.1% at 1.0×10-8M and 90.9±3.8% at 1.0×10-6M. It showed higher binding affinity (IC50=0.189±0.012μM) for the SL receptor ShHTL7 than (+)-GR24 (IC50=0.248±0.032μM), rac-GR24 (IC50=0.319±0.032μM), and 7BrGR24 (IC50=0.521±0.087μM). Molecular docking experiments indicated that the binding affinity of both halogenated analogs to the strigolactone receptor OsD14 was similar to that of (+)-GR24. Our results indicate that 7FGR24 is a promising agent for the control of parasitic weeds.
Collapse
Affiliation(s)
- Yuchao Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- State Key Laboratory of Dao-di Herbs Breeding Base, National Resources Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
- Agricultural Biotechnology Center, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan, China
| | - Yi Kuang
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | - Liyang Shi
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | - Xing Wang
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | - Haoyu Fu
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | - Shengxiang Yang
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | | | - Luqi Huang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- State Key Laboratory of Dao-di Herbs Breeding Base, National Resources Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuan Yuan
- State Key Laboratory of Dao-di Herbs Breeding Base, National Resources Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| |
Collapse
|
7
|
Jamil M, Kountche BA, Al-Babili S. Current progress in Striga management. PLANT PHYSIOLOGY 2021; 185:1339-1352. [PMID: 33793943 PMCID: PMC8133620 DOI: 10.1093/plphys/kiab040] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 01/18/2021] [Indexed: 05/20/2023]
Abstract
The Striga, particularly S. he rmonthica, problem has become a major threat to food security, exacerbating hunger and poverty in many African countries. A number of Striga control strategies have been proposed and tested during the past decade, however, further research efforts are still needed to provide sustainable and effective solutions to the Striga problem. In this paper, we provide an update on the recent progress and the approaches used in Striga management, and highlight emerging opportunities for developing new technologies to control this enigmatic parasite.
Collapse
Affiliation(s)
- Muhammad Jamil
- Division of Biological and Environmental Sciences and Engineering, the BioActives Lab, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Boubacar A Kountche
- Division of Biological and Environmental Sciences and Engineering, the BioActives Lab, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Salim Al-Babili
- Division of Biological and Environmental Sciences and Engineering, the BioActives Lab, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Author for communication:
| |
Collapse
|
8
|
Taulera Q, Lauressergues D, Martin K, Cadoret M, Servajean V, Boyer FD, Rochange S. Initiation of arbuscular mycorrhizal symbiosis involves a novel pathway independent from hyphal branching. MYCORRHIZA 2020; 30:491-501. [PMID: 32506172 DOI: 10.1007/s00572-020-00965-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 05/18/2020] [Indexed: 06/11/2023]
Abstract
The arbuscular mycorrhizal symbiosis is a very common association between plant roots and soil fungi, which greatly contributes to plant nutrition. Root-exuded compounds known as strigolactones act as symbiotic signals stimulating the fungus prior to root colonization. Strigolactones also play an endogenous role in planta as phytohormones and contribute to the regulation of various developmental traits. Structure-activity relationship studies have revealed both similarities and differences between the structural features required for bioactivity in plants and arbuscular mycorrhizal fungi. In the latter case, bioassays usually measured a stimulation of hyphal branching on isolated fungi of the Gigaspora genus, grown in vitro. Here, we extended these investigations with a bioassay that evaluates the bioactivity of strigolactone analogs in a symbiotic situation and the use of the model mycorrhizal fungus Rhizophagus irregularis. Some general structural requirements for bioactivity reported previously for Gigaspora were confirmed. We also tested additional strigolactone analogs bearing modifications on the conserved methylbutenolide ring, a key element of strigolactone perception by plants. A strigolactone analog with an unmethylated butenolide ring could enhance the ability of R. irregularis to colonize host roots. Surprisingly, when applied to the isolated fungus in vitro, this compound stimulated germ tube elongation but inhibited hyphal branching. Therefore, this compound was able to act on the fungal and/or plant partner to facilitate initiation of the arbuscular mycorrhizal symbiosis, independently from hyphal branching and possibly from the strigolactone pathway.
Collapse
Affiliation(s)
- Quentin Taulera
- Laboratoire de Recherche en Sciences Végétales, CNRS, Université de Toulouse, UPS, 24 chemin de Borde Rouge, Auzeville, 31320, Castanet-Tolosan, France
| | - Dominique Lauressergues
- Laboratoire de Recherche en Sciences Végétales, CNRS, Université de Toulouse, UPS, 24 chemin de Borde Rouge, Auzeville, 31320, Castanet-Tolosan, France
| | - Katie Martin
- Laboratoire de Recherche en Sciences Végétales, CNRS, Université de Toulouse, UPS, 24 chemin de Borde Rouge, Auzeville, 31320, Castanet-Tolosan, France
| | - Maïna Cadoret
- Laboratoire de Recherche en Sciences Végétales, CNRS, Université de Toulouse, UPS, 24 chemin de Borde Rouge, Auzeville, 31320, Castanet-Tolosan, France
| | - Vincent Servajean
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198, Gif-sur-Yvette, France
| | - François-Didier Boyer
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Soizic Rochange
- Laboratoire de Recherche en Sciences Végétales, CNRS, Université de Toulouse, UPS, 24 chemin de Borde Rouge, Auzeville, 31320, Castanet-Tolosan, France.
| |
Collapse
|
9
|
Jamil M, Kountche B, Haider I, Wang J, Aldossary F, Zarban R, Jia KP, Yonli D, Shahul Hameed U, Takahashi I, Ota T, Arold S, Asami T, Al-Babili S. Methylation at the C-3' in D-Ring of Strigolactone Analogs Reduces Biological Activity in Root Parasitic Plants and Rice. FRONTIERS IN PLANT SCIENCE 2019; 10:353. [PMID: 31001294 PMCID: PMC6455008 DOI: 10.3389/fpls.2019.00353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/07/2019] [Indexed: 05/04/2023]
Abstract
Strigolactones (SLs) regulate plant development and induce seed germination in obligate root parasitic weeds, e.g. Striga spp. Because organic synthesis of natural SLs is laborious, there is a large need for easy-to-synthesize and efficient analogs. Here, we investigated the effect of a structural modification of the D-ring, a conserved structural element in SLs. We synthesized and investigated the activity of two analogs, MP13 and MP26, which differ from previously published AR8 and AR36 only in the absence of methylation at C-3'. The de-methylated MP13 and MP26 were much more efficient in regulating plant development and inducing Striga seed germination, compared with AR8. Hydrolysis assays performed with purified Striga SL receptor and docking of AR8 and MP13 to the corresponding active site confirmed and explained the higher activity. Field trials performed in a naturally Striga-infested African farmer's field unraveled MP13 as a promising candidate for combating Striga by inducing germination in host's absence. Our findings demonstrate that methylation of the C-3' in D-ring in SL analogs has a negative impact on their activity and identify MP13 and, particularly, MP26 as potent SL analogs with simple structures, which can be employed to control Striga, a major threat to global food security.
Collapse
Affiliation(s)
- Muhammad Jamil
- The BioActives Lab, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Boubacar A. Kountche
- The BioActives Lab, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Imran Haider
- The BioActives Lab, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Jian You Wang
- The BioActives Lab, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Faisal Aldossary
- The BioActives Lab, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Randa A. Zarban
- The BioActives Lab, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Kun-Peng Jia
- The BioActives Lab, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Djibril Yonli
- Institute of Environment and Agricultural Research (INERA), Ouagadougou, Burkina Faso
| | - Umar F. Shahul Hameed
- Computational Bioscience Research Center, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Ikuo Takahashi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Tsuyoshi Ota
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Stefan T. Arold
- Computational Bioscience Research Center, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Tadao Asami
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Salim Al-Babili
- The BioActives Lab, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- *Correspondence: Salim Al-Babili,
| |
Collapse
|
10
|
Lombardi C, Artuso E, Grandi E, Lolli M, Spyrakis F, Priola E, Prandi C. Recent advances in the synthesis of analogues of phytohormones strigolactones with ring-closing metathesis as a key step. Org Biomol Chem 2018; 15:8218-8231. [PMID: 28880031 DOI: 10.1039/c7ob01917c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In this paper, we synthesized and evaluated the biological activity of structural analogues of natural strigolactones in which the butenolide D-ring has been replaced with a γ-lactam. The key step to obtain the α,β-unsaturated-γ-lactam was an RCM on suitably substituted amides. Strigolactones (SLs) are plant hormones with various developmental functions. As soil signaling chemicals, they are required for establishing beneficial mycorrhizal plant/fungus symbiosis. Beside these auxinic roles, recently SLs have been successfully investigated as antitumoral agents. Peculiar to the SL perception system is the enzymatic activity of the hormone receptor. SARs data have shown that the presence of the butenolide D-ring is crucial to retain the biological activity. The substitution of the butenolide with a lactam might shed light on the mechanism of perception. In the following, a dedicated in silico study suggested the binding modes of the synthesized compounds to the receptor of SLs in plants.
Collapse
Affiliation(s)
- Chiara Lombardi
- Department of Chemistry, University of Turin, via P. Giuria 7 10125, Turin, Italy.
| | | | | | | | | | | | | |
Collapse
|
11
|
Sanchez E, Artuso E, Lombardi C, Visentin I, Lace B, Saeed W, Lolli ML, Kobauri P, Ali Z, spyrakis F, Cubas P, Cardinale F, Prandi C. Structure-activity relationships of strigolactones via a novel, quantitative in planta bioassay. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:2333-2343. [PMID: 29554337 PMCID: PMC5913603 DOI: 10.1093/jxb/ery092] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 02/27/2018] [Indexed: 06/01/2023]
Abstract
Strigolactones (SLs) are plant hormones with various functions in development, responses to stress, and interactions with (micro)organisms in the rhizosphere, including with seeds of parasitic plants. Their perception for hormonal functions requires an α,β-hydrolase belonging to the D14 clade in higher plants; perception of host-produced SLs by parasitic seeds relies on similar but phylogenetically distinct proteins (D14-like). D14 and D14-like proteins are peculiar receptors, because they cleave SLs before undergoing a conformational change that elicits downstream events. Structure-activity relationship data show that the butenolide D-ring is crucial for bioactivity. We applied a bioisosteric approach to the structure of SLs by synthetizing analogues and mimics of natural SLs in which the D-ring was changed from a butenolide to a lactam and then evaluating their bioactivity. This was done by using a novel bioassay based on Arabidopsis transgenic lines expressing AtD14 fused to firefly luciferase, in parallel with the quantification of germination-inducing activity on parasitic seeds. The results obtained showed that the in planta bioassay is robust and quantitative, and thus can be confidently added to the SL-survey toolbox. The results also showed that modification of the butenolide ring into a lactam one significantly hampers the biological activity exhibited by SLs possessing a canonical lactonic D-ring.
Collapse
Affiliation(s)
- Elena Sanchez
- Centro Nacional de Biotecnología-CSIC, Plant Molecular Genetics Department, C/ Darwin, Campus UAM, Madrid, Spain
| | - Emma Artuso
- Department of Chemistry, University of Turin, via P. Giuria Turin, Italy
| | - Chiara Lombardi
- Centro Nacional de Biotecnología-CSIC, Plant Molecular Genetics Department, C/ Darwin, Campus UAM, Madrid, Spain
| | - Ivan Visentin
- Department of Agricultural, Forestry and Food Science, Largo P. Braccini, Grugliasco (TO), Italy
| | - Beatrice Lace
- Centro Nacional de Biotecnología-CSIC, Plant Molecular Genetics Department, C/ Darwin, Campus UAM, Madrid, Spain
- University of Freiburg, Faculty of Biology, Cell Biology, Schänzlestr., Freiburg, Germany
| | - Wajeeha Saeed
- Department of Agricultural, Forestry and Food Science, Largo P. Braccini, Grugliasco (TO), Italy
- Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan
| | - Marco L Lolli
- Department of Drug Science and Technology, University of Turin, via P. Giuria Turin, Italy
| | - Piermichele Kobauri
- Department of Drug Science and Technology, University of Turin, via P. Giuria Turin, Italy
| | - Zahid Ali
- Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan
| | - Francesca spyrakis
- Department of Drug Science and Technology, University of Turin, via P. Giuria Turin, Italy
| | - Pilar Cubas
- Department of Chemistry, University of Turin, via P. Giuria Turin, Italy
| | - Francesca Cardinale
- Department of Agricultural, Forestry and Food Science, Largo P. Braccini, Grugliasco (TO), Italy
| | - Cristina Prandi
- Centro Nacional de Biotecnología-CSIC, Plant Molecular Genetics Department, C/ Darwin, Campus UAM, Madrid, Spain
| |
Collapse
|
12
|
Yoneyama K, Xie X, Yoneyama K, Kisugi T, Nomura T, Nakatani Y, Akiyama K, McErlean CSP. Which are the major players, canonical or non-canonical strigolactones? JOURNAL OF EXPERIMENTAL BOTANY 2018. [PMID: 29522151 DOI: 10.1093/jxb/ery090] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Strigolactones (SLs) can be classified into two structurally distinct groups: canonical and non-canonical SLs. Canonical SLs contain the ABCD ring system, and non-canonical SLs lack the A, B, or C ring but have the enol ether-D ring moiety, which is essential for biological activities. The simplest non-canonical SL is the SL biosynthetic intermediate carlactone. In plants, carlactone and its oxidized metabolites, such as carlactonoic acid and methyl carlactonoate, are present in root and shoot tissues. In some plant species, including black oat (Avena strigosa), sunflower (Helianthus annuus), and maize (Zea mays), non-canonical SLs in the root exudates are major germination stimulants. Various plant species, such as tomato (Solanum lycopersicum), Arabidopsis, and poplar (Populus spp.), release carlactonoic acid into the rhizosphere. These observations suggest that both canonical and non-canonical SLs act as host-recognition signals in the rhizosphere. In contrast, the limited distribution of canonical SLs in the plant kingdom, and the structure-specific and stereospecific transportation of canonical SLs from roots to shoots, suggest that plant hormones inhibiting shoot branching are not canonical SLs but, rather, are non-canonical SLs.
Collapse
Affiliation(s)
- Koichi Yoneyama
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Japan
| | - Xiaonan Xie
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Japan
| | - Kaori Yoneyama
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Japan
- Graduate School of Agriculture, Ehime University, Matsuyama, Japan
| | - Takaya Kisugi
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Japan
- Laboratory of Racing Chemistry, Utsunomiya, Japan
| | - Takahito Nomura
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Japan
| | - Yoshifumi Nakatani
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | - Kohki Akiyama
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | | |
Collapse
|
13
|
Hamiaux C, Drummond RSM, Luo Z, Lee HW, Sharma P, Janssen BJ, Perry NB, Denny WA, Snowden KC. Inhibition of strigolactone receptors by N-phenylanthranilic acid derivatives: Structural and functional insights. J Biol Chem 2018. [PMID: 29523686 DOI: 10.1074/jbc.ra117.001154] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The strigolactone (SL) family of plant hormones regulates a broad range of physiological processes affecting plant growth and development and also plays essential roles in controlling interactions with parasitic weeds and symbiotic fungi. Recent progress elucidating details of SL biosynthesis, signaling, and transport offers many opportunities for discovering new plant-growth regulators via chemical interference. Here, using high-throughput screening and downstream biochemical assays, we identified N-phenylanthranilic acid derivatives as potent inhibitors of the SL receptors from petunia (DAD2), rice (OsD14), and Arabidopsis (AtD14). Crystal structures of DAD2 and OsD14 in complex with inhibitors further provided detailed insights into the inhibition mechanism, and in silico modeling of 19 other plant strigolactone receptors suggested that these compounds are active across a large range of plant species. Altogether, these results provide chemical tools for investigating SL signaling and further define a framework for structure-based approaches to design and validate optimized inhibitors of SL receptors for specific plant targets.
Collapse
Affiliation(s)
- Cyril Hamiaux
- From the New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand,
| | - Revel S M Drummond
- From the New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand
| | - Zhiwei Luo
- From the New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand
| | - Hui Wen Lee
- From the New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand.,the School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Prachi Sharma
- From the New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand.,the School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Bart J Janssen
- From the New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand
| | - Nigel B Perry
- the Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand.,the New Zealand Institute for Plant and Food Research Limited, Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand, and
| | - William A Denny
- the Auckland Cancer Society Research Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Kimberley C Snowden
- From the New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand,
| |
Collapse
|
14
|
Parisotto S, Lace B, Artuso E, Lombardi C, Deagostino A, Scudu R, Garino C, Medana C, Prandi C. Heck functionalization of an asymmetric aza-BODIPY core: synthesis of far-red infrared probes for bioimaging applications. Org Biomol Chem 2017; 15:884-893. [DOI: 10.1039/c6ob02602h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Heck functionalization of azadipyrromethenes (aza-DIPY) allows the introduction of suitable functional groups to convert aza-BODIPY in bioconjugate complexes.
Collapse
Affiliation(s)
- Stefano Parisotto
- Dipartimento di Chimica
- Università degli Studi di Torino
- 10125 Torino
- Italy
| | - Beatrice Lace
- Dipartimento di Chimica
- Università degli Studi di Torino
- 10125 Torino
- Italy
| | - Emma Artuso
- Dipartimento di Chimica
- Università degli Studi di Torino
- 10125 Torino
- Italy
| | - Chiara Lombardi
- Dipartimento di Chimica
- Università degli Studi di Torino
- 10125 Torino
- Italy
| | | | - Roberto Scudu
- Dipartimento di Chimica
- Università degli Studi di Torino
- 10125 Torino
- Italy
| | - Claudio Garino
- Dipartimento di Chimica
- Università degli Studi di Torino
- 10125 Torino
- Italy
| | - Claudio Medana
- Dipartimento di Biotecnologie Molecolari e Scienze per la Salute
- Italy
| | - Cristina Prandi
- Dipartimento di Chimica
- Università degli Studi di Torino
- 10125 Torino
- Italy
| |
Collapse
|
15
|
Grenet E, Martinez J, Salom-Roig XJ. Torquoselective Nazarov Cyclization Mediated by a Chiral Sulfoxide: First Enantioselective Synthesis of two Known Anticancer Agents. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600471] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Erwann Grenet
- Institut de Biomolécules Max Mousseron (IBMM); UMR 5247; Université de Montpellier, CNRS, ENSCM; Place Eugène Bataillon 34095 Montpellier France
| | - Jean Martinez
- Institut de Biomolécules Max Mousseron (IBMM); UMR 5247; Université de Montpellier, CNRS, ENSCM; Place Eugène Bataillon 34095 Montpellier France
| | - Xavier J. Salom-Roig
- Institut de Biomolécules Max Mousseron (IBMM); UMR 5247; Université de Montpellier, CNRS, ENSCM; Place Eugène Bataillon 34095 Montpellier France
| |
Collapse
|
16
|
Takahashi I, Fukui K, Asami T. Chemical modification of a phenoxyfuranone-type strigolactone mimic for selective effects on rice tillering or Striga hermonthica seed germination. PEST MANAGEMENT SCIENCE 2016; 72:2048-2053. [PMID: 26929041 DOI: 10.1002/ps.4265] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 02/24/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND We previously reported that a series of phenoxyfuranone compounds, designated 'debranones', mimic strigolactone (SL) activity. 4-Bromodebranone (4BD) is a functionally selective SL mimic that reduces the number of shoot branches on rice more potently than GR24, a typical synthetic SL analogue, but does not induce seed germination in the root-parasitic plant Striga hermonthica. To enhance the selective activity of debranones in stimulating the seed germination of root-parasitic plants, we prepared several analogues of 4BD in which the chlorine atom was substituted with an H atom at the o-, m- or p-position on the phenyl ring (designated 2-, 3-, or 4-chlorodebranone, respectively) or had a bicyclic group instead of the phenyl ring. We evaluated the biological activities of the compounds with rice tillering assays and S. hermonthica seed germination assays. RESULTS Both assays showed that the substituent position affected debranone efficiency, and among the monochlorodebranones, 2-chlorodebranone was more effective than the other two isomers in both assays. When the activities of the bicyclic debranones were compared in the same two assays, one was more active than GR24 in the rice tillering assay. This debranone also stimulated the germination of S. hermonthica seeds. Thus, some debranone derivatives induced the germination of S. hermonthica seeds, although their activities were still ∼1/20 that of GR24. CONCLUSION These results strongly suggest that further and rigorous structure-activity relationship studies of the debranones will identify derivatives that more potently stimulate the suicidal germination of S. hermonthica seeds. © 2016 Society of Chemical Industry.
Collapse
Affiliation(s)
- Ikuo Takahashi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kosuke Fukui
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Tadao Asami
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
- Department of Biochemistry, King Abdulaziz University, Jeddah, Saudi Arabia.
| |
Collapse
|
17
|
Lace B, Prandi C. Shaping Small Bioactive Molecules to Untangle Their Biological Function: A Focus on Fluorescent Plant Hormones. MOLECULAR PLANT 2016; 9:1099-1118. [PMID: 27378726 DOI: 10.1016/j.molp.2016.06.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 06/21/2016] [Accepted: 06/21/2016] [Indexed: 05/14/2023]
Abstract
Modern biology overlaps with chemistry in explaining the structure and function of all cellular processes at the molecular level. Plant hormone research is perfectly located at the interface between these two disciplines, taking advantage of synthetic and computational chemistry as a tool to decipher the complex biological mechanisms regulating the action of plant hormones. These small signaling molecules regulate a wide range of developmental processes, adapting plant growth to ever changing environmental conditions. The synthesis of small bioactive molecules mimicking the activity of endogenous hormones allows us to unveil many molecular features of their functioning, giving rise to a new field, plant chemical biology. In this framework, fluorescence labeling of plant hormones is emerging as a successful strategy to track the fate of these challenging molecules inside living organisms. Thanks to the increasing availability of new fluorescent probes as well as advanced and innovative imaging technologies, we are now in a position to investigate many of the dynamic mechanisms through which plant hormones exert their action. Such a deep and detailed comprehension is mandatory for the development of new green technologies for practical applications. In this review, we summarize the results obtained so far concerning the fluorescent labeling of plant hormones, highlighting the basic steps leading to the design and synthesis of these compelling molecular tools and their applications.
Collapse
Affiliation(s)
- Beatrice Lace
- Department of Chemistry, University of Turin, Via P. Giuria 7, 10125 Torino, Italy
| | - Cristina Prandi
- Department of Chemistry, University of Turin, Via P. Giuria 7, 10125 Torino, Italy.
| |
Collapse
|
18
|
Kapulnik Y, Koltai H. Fine-tuning by strigolactones of root response to low phosphate. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2016; 58:203-12. [PMID: 26667884 DOI: 10.1111/jipb.12454] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 12/09/2015] [Indexed: 05/10/2023]
Abstract
Strigolactones are plant hormones that regulate the development of different plant parts. In the shoot, they regulate axillary bud outgrowth and in the root, root architecture and root-hair length and density. Strigolactones are also involved with communication in the rhizosphere, including enhancement of hyphal branching of arbuscular mycorrhizal fungi. Here we present the role and activity of strigolactones under conditions of phosphate deprivation. Under these conditions, their levels of biosynthesis and exudation increase, leading to changes in shoot and root development. At least for the latter, these changes are likely to be associated with alterations in auxin transport and sensitivity. On the other hand, strigolactones may positively affect plant-mycorrhiza interactions and thereby promote phosphate acquisition by the plant. Strigolactones may be a way for plants to fine-tune their growth pattern under phosphate deprivation.
Collapse
Affiliation(s)
- Yoram Kapulnik
- Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan 50250, Israel
| | - Hinanit Koltai
- Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan 50250, Israel
| |
Collapse
|
19
|
Abstract
Carotenoids are precursors of carotenoid derived molecules termed apocarotenoids, which include isoprenoids with important functions in plant-environment interactions such as the attraction of pollinators and the defense against pathogens and herbivores. Apocarotenoids also include volatile aromatic compounds that act as repellents, chemoattractants, growth simulators and inhibitors, as well as the phytohormones abscisic acid and strigolactones. In plants, apocarotenoids can be found in several types of plastids (etioplast, leucoplast and chromoplast) and among different plant tissues such as flowers and roots. The structural similarity of some flower and spice isoprenoid volatile organic compounds (β-ionone and safranal) to carotenoids has led to the recent discovery of carotenoid-specific cleavage oxygenases, including carotenoid cleavage dioxygenases and 9-cis-epoxydioxygenases, which tailor and transform carotenoids into apocarotenoids. The great diversity of apocarotenoids is a consequence of the huge amount of carotenoid precursors, the variations in specific cleavage sites and the modifications after cleavage. Lycopene, β-carotene and zeaxanthin are the precursors of the main apocarotenoids described to date, which include bixin, crocin, picrocrocin, abscisic acid, strigolactone and mycorradicin.The current chapter will give rise to an overview of the biosynthesis and function of the most important apocarotenoids in plants, as well as the current knowledge about the carotenoid cleavage oxygenase enzymes involved in these biosynthetic pathways.
Collapse
Affiliation(s)
| | - Claudia Stange
- Centro de Biología Molecular Vegetal, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Santiago, Chile.
| |
Collapse
|
20
|
Makhzoum A, Yousefzadi M, Malik S, Gantet P, Tremouillaux-Guiller J. Strigolactone biology: genes, functional genomics, epigenetics and applications. Crit Rev Biotechnol 2015; 37:151-162. [PMID: 26669271 DOI: 10.3109/07388551.2015.1121967] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Strigolactones (SLs) represent an important new plant hormone class marked by their multifunctional role in plant and rhizosphere interactions. These compounds stimulate hyphal branching in arbuscular mycorrhizal fungi (AMF) and seed germination of root parasitic plants. In addition, they are involved in the control of plant architecture by inhibiting bud outgrowth as well as many other morphological and developmental processes together with other plant hormones such as auxins and cytokinins. The biosynthetic pathway of SLs that are derived from carotenoids was partially decrypted based on the identification of mutants from a variety of plant species. Only a few SL biosynthetic and regulated genes and related regulatory transcription factors have been identified. However, functional genomics and epigenetic studies started to give first elements on the modality of the regulation of SLs related genes. Since they control plant architecture and plant-rhizosphere interaction, SLs start to be used for agronomical and biotechnological applications. Furthermore, the genes involved in the SL biosynthetic pathway and genes regulated by SL constitute interesting targets for plant breeding. Therefore, it is necessary to decipher and better understand the genetic determinants of their regulation at different levels.
Collapse
Affiliation(s)
- Abdullah Makhzoum
- a Department of Biology , University of Western Ontario , London , Ontario , Canada
| | - Morteza Yousefzadi
- b Department of Marine Biology , Faculty of Marine Sciences and Technology, Hormozgan University , Bandar Abbas , Iran
| | - Sonia Malik
- c Health Sciences Graduate Program, Biological and Health Sciences Centre, Federal University of Maranhão , São Luís, MA , Brazil
| | - Pascal Gantet
- d Faculté des Sciences , Université de Montpellier , UMR DIADE , Montpellier , France , and
| | | |
Collapse
|
21
|
Fridlender M, Lace B, Wininger S, Dam A, Kumari P, Belausov E, Tsemach H, Kapulnik Y, Prandi C, Koltai H. Influx and Efflux of Strigolactones Are Actively Regulated and Involve the Cell-Trafficking System. MOLECULAR PLANT 2015; 8:1809-12. [PMID: 26343969 DOI: 10.1016/j.molp.2015.08.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 07/12/2015] [Accepted: 08/25/2015] [Indexed: 05/07/2023]
Affiliation(s)
- Marcelo Fridlender
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
| | - Beatrice Lace
- Department of Chemistry, University of Turin, via P. Giuria 7 10125 Torino, Italy
| | - Smadar Wininger
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
| | - Anandamoy Dam
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
| | - Puja Kumari
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
| | - Eduard Belausov
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
| | - Hanita Tsemach
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
| | - Yoram Kapulnik
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
| | - Cristina Prandi
- Department of Chemistry, University of Turin, via P. Giuria 7 10125 Torino, Italy
| | - Hinanit Koltai
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel.
| |
Collapse
|
22
|
Artuso E, Ghibaudi E, Lace B, Marabello D, Vinciguerra D, Lombardi C, Koltai H, Kapulnik Y, Novero M, Occhiato EG, Scarpi D, Parisotto S, Deagostino A, Venturello P, Mayzlish-Gati E, Bier A, Prandi C. Stereochemical Assignment of Strigolactone Analogues Confirms Their Selective Biological Activity. JOURNAL OF NATURAL PRODUCTS 2015; 78:2624-33. [PMID: 26502774 DOI: 10.1021/acs.jnatprod.5b00557] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Strigolactones (SLs) are new plant hormones with various developmental functions. They are also soil signaling chemicals that are required for establishing beneficial mycorrhizal plant/fungus symbiosis. In addition, SLs play an essential role in inducing seed germination in root-parasitic weeds, which are one of the seven most serious biological threats to food security. There are around 20 natural SLs that are produced by plants in very low quantities. Therefore, most of the knowledge on SL signal transduction and associated molecular events is based on the application of synthetic analogues. Stereochemistry plays a crucial role in the structure-activity relationship of SLs, as compounds with an unnatural D-ring configuration may induce biological effects that are unrelated to SLs. We have synthesized a series of strigolactone analogues, whose absolute configuration has been elucidated and related with their biological activity, thus confirming the high specificity of the response. Analogues bearing the R-configured butenolide moiety showed enhanced biological activity, which highlights the importance of this stereochemical motif.
Collapse
Affiliation(s)
- Emma Artuso
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| | - Elena Ghibaudi
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| | - Beatrice Lace
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| | - Domenica Marabello
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| | - Daniele Vinciguerra
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| | - Chiara Lombardi
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| | | | | | - Mara Novero
- DBIOS, University of Turin , Viale Mattioli 25, 10125 Turin, Italy
| | - Ernesto G Occhiato
- Department of Chemistry "Ugo Schiff", University of Florence , Via della Lastruccia 13, 50019 Sesto Fiorentino, Italy
| | - Dina Scarpi
- Department of Chemistry "Ugo Schiff", University of Florence , Via della Lastruccia 13, 50019 Sesto Fiorentino, Italy
| | - Stefano Parisotto
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| | - Annamaria Deagostino
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| | - Paolo Venturello
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| | | | - Ariel Bier
- ARO Volcani Center , Bet Dagan 50250, Israel
| | - Cristina Prandi
- Department of Chemistry, University of Turin , Via P. Giuria 7, 10125 Turin, Italy
| |
Collapse
|
23
|
Kumar M, Pandya-Kumar N, Kapulnik Y, Koltai H. Strigolactone signaling in root development and phosphate starvation. PLANT SIGNALING & BEHAVIOR 2015; 10:e1045174. [PMID: 26251884 PMCID: PMC4622057 DOI: 10.1080/15592324.2015.1045174] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 04/22/2015] [Indexed: 05/22/2023]
Abstract
Strigolactones (SLs), have recently been recognized as phytohormone involve in orchestrating shoot and root architecture. In, roots SLs positively regulate root hair length and density, suppress lateral root formation and promote primary root meristem cell number. The biosynthesis and exudation of SLs increases under low phosphate level to regulate root responses. This hormonal response suggests an adaptation strategy of plant to optimize growth and development under nutrient limitations. However, little is known on signal-transduction pathways associated with SL activities. In this review, we outline the current knowledge on SL biology by describing their role in the regulation of root development. Also, we discuss the recent findings on the non-cell autonomous signaling of SLs, that involve PIN polarization, vesicle trafficking, changes in actin architecture and dynamic in response to phosphate starvation.
Collapse
Affiliation(s)
- Manoj Kumar
- Institute of Plant Sciences; Agricultural Research Organization (ARO); the Volcani Center; Bet Dagan, Israel
- Current address: Plant Functional Biology and Climate Change Cluster (C3); University of Technology Sydney (UTS); Sydney, Australia
- Correspondence to: Manoj Kumar;
| | - Nirali Pandya-Kumar
- Institute of Plant Sciences; Agricultural Research Organization (ARO); the Volcani Center; Bet Dagan, Israel
| | - Yoram Kapulnik
- Institute of Plant Sciences; Agricultural Research Organization (ARO); the Volcani Center; Bet Dagan, Israel
| | - Hinanit Koltai
- Institute of Plant Sciences; Agricultural Research Organization (ARO); the Volcani Center; Bet Dagan, Israel
| |
Collapse
|
24
|
Kapulnik Y, Koltai H. Strigolactone involvement in root development, response to abiotic stress, and interactions with the biotic soil environment. PLANT PHYSIOLOGY 2014; 166:560-9. [PMID: 25037210 PMCID: PMC4213088 DOI: 10.1104/pp.114.244939] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 07/14/2014] [Indexed: 05/02/2023]
Abstract
Strigolactones, recently discovered as plant hormones, regulate the development of different plant parts. In the root, they regulate root architecture and affect root hair length and density. Their biosynthesis and exudation increase under low phosphate levels, and they are associated with root responses to these conditions. Their signaling pathway in the plant includes protein interactions and ubiquitin-dependent repressor degradation. In the root, they lead to changes in actin architecture and dynamics as well as localization of the PIN-FORMED auxin transporter in the plasma membrane. Strigolactones are also involved with communication in the rhizosphere. They are necessary for germination of parasitic plant seeds, they enhance hyphal branching of arbuscular mycorrhizal fungi of the Glomus and Gigaspora spp., and they promote rhizobial symbiosis. This review focuses on the role played by strigolactones in root development, their response to nutrient deficiency, and their involvement with plant interactions in the rhizosphere.
Collapse
Affiliation(s)
- Yoram Kapulnik
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
| | - Hinanit Koltai
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
| |
Collapse
|
25
|
Koltai H. Implications of non-specific strigolactone signaling in the rhizosphere. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2014; 225:9-14. [PMID: 25017154 DOI: 10.1016/j.plantsci.2014.04.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 04/25/2014] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
Strigolactones produced by various plant species are involved in the development of different plant parts. They are also exuded by plant roots to the rhizosphere, where they are involved in the induction of seed germination of the parasitic plants Striga and Orobanche, hyphal branching of the symbiotic arbuscular mycorrhizal fungi (AMF), and the symbiotic interaction with Rhizobium. In the present discussion paper, the essentialness of strigolactones as communication signals in these plant interactions is discussed in view of the existence of other plant-derived substances that are able to promote these plant interactions. In addition, the importance of strigolactones for determination of interaction specificity is discussed based on current knowledge on strigolactone composition, perception and delivery. The different activities of strigolactones in plant development and in the rhizosphere suggest their possible use in agriculture. However, despite efforts made in this direction, there is no current, practical implementation. Possible reasons for the encountered difficulties and suggested solutions to promote strigolactone use in agriculture are discussed.
Collapse
Affiliation(s)
- Hinanit Koltai
- Institute of Plant Sciences, ARO, Volcani Center, Bet-Dagan 50250, Israel.
| |
Collapse
|
26
|
Hoffmann B, Proust H, Belcram K, Labrune C, Boyer FD, Rameau C, Bonhomme S. Strigolactones inhibit caulonema elongation and cell division in the moss Physcomitrella patens. PLoS One 2014; 9:e99206. [PMID: 24911649 PMCID: PMC4049778 DOI: 10.1371/journal.pone.0099206] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 05/12/2014] [Indexed: 11/18/2022] Open
Abstract
In vascular plants, strigolactones (SLs) are known for their hormonal role and for their role as signal molecules in the rhizosphere. SLs are also produced by the moss Physcomitrella patens, in which they act as signaling factors for controlling filament extension and possibly interaction with neighboring individuals. To gain a better understanding of SL action at the cellular level, we investigated the effect of exogenously added molecules (SLs or analogs) in moss growth media. We used the previously characterized Ppccd8 mutant that is deficient in SL synthesis and showed that SLs affect moss protonema extension by reducing caulonema cell elongation and mainly cell division rate, both in light and dark conditions. Based on this effect, we set up bioassays to examine chemical structure requirements for SL activity in moss. The results suggest that compounds GR24, GR5, and 5-deoxystrigol are active in moss (as in pea), while other analogs that are highly active in the control of pea branching show little activity in moss. Interestingly, the karrikinolide KAR1, which shares molecular features with SLs, did not have any effect on filament growth, even though the moss genome contains several genes homologous to KAI2 (encoding the KAR1 receptor) and no canonical homologue to D14 (encoding the SL receptor). Further studies should investigate whether SL signaling pathways have been conserved during land plant evolution.
Collapse
Affiliation(s)
- Beate Hoffmann
- Institut Jean-Pierre Bourgin, UMR1318 Institut National de la Recherche Agronomique-AgroParisTech, Versailles, France,
| | - Hélène Proust
- Institut Jean-Pierre Bourgin, UMR1318 Institut National de la Recherche Agronomique-AgroParisTech, Versailles, France,
| | - Katia Belcram
- Institut Jean-Pierre Bourgin, UMR1318 Institut National de la Recherche Agronomique-AgroParisTech, Versailles, France,
| | - Cécile Labrune
- Institut Jean-Pierre Bourgin, UMR1318 Institut National de la Recherche Agronomique-AgroParisTech, Versailles, France,
| | - François-Didier Boyer
- Institut Jean-Pierre Bourgin, UMR1318 Institut National de la Recherche Agronomique-AgroParisTech, Versailles, France,
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, UPR2301 CNRS, Gif-sur-Yvette, France
| | - Catherine Rameau
- Institut Jean-Pierre Bourgin, UMR1318 Institut National de la Recherche Agronomique-AgroParisTech, Versailles, France,
| | - Sandrine Bonhomme
- Institut Jean-Pierre Bourgin, UMR1318 Institut National de la Recherche Agronomique-AgroParisTech, Versailles, France,
| |
Collapse
|
27
|
Boyer FD, de Saint Germain A, Pouvreau JB, Clavé G, Pillot JP, Roux A, Rasmussen A, Depuydt S, Lauressergues D, Frei Dit Frey N, Heugebaert TSA, Stevens CV, Geelen D, Goormachtig S, Rameau C. New strigolactone analogs as plant hormones with low activities in the rhizosphere. MOLECULAR PLANT 2014; 7:675-90. [PMID: 24249726 DOI: 10.1093/mp/sst163] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Strigolactones (SLs) are known not only as plant hormones, but also as rhizosphere signals for establishing symbiotic and parasitic interactions. The design of new specific SL analogs is a challenging goal in understanding the basic plant biology and is also useful to control plant architectures without favoring the development of parasitic plants. Two different molecules (23 (3'-methyl-GR24), 31 (thia-3'-methyl-debranone-like molecule)) already described, and a new one (AR36), for which the synthesis is presented, are biologically compared with the well-known GR24 and the recently identified CISA-1. These different structures emphasize the wide range of parts attached to the D-ring for the bioactivity as a plant hormone. These new compounds possess a common dimethylbutenolide motif but their structure varies in the ABC part of the molecules: 23 has the same ABC part as GR24, while 31 and AR36 carry, respectively, an aromatic ring and an acyclic carbon chain. Detailed information is given for the bioactivity of such derivatives in strigolactone synthesis or in perception mutant plants (pea rms1 and rms4, Arabidopsis max2 and, max4) for different hormonal functions along with their action in the rhizosphere on arbuscular mycorrhizal hyphal growth and parasitic weed germination.
Collapse
Affiliation(s)
- François-Didier Boyer
- Institut Jean-Pierre Bourgin, UMR1318 Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Route de Saint-Cyr (RD 10), F-78026 Versailles Cedex, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Fonseca S, Rosado A, Vaughan-Hirsch J, Bishopp A, Chini A. Molecular locks and keys: the role of small molecules in phytohormone research. FRONTIERS IN PLANT SCIENCE 2014; 5:709. [PMID: 25566283 PMCID: PMC4269113 DOI: 10.3389/fpls.2014.00709] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 11/26/2014] [Indexed: 05/03/2023]
Abstract
Plant adaptation, growth and development rely on the integration of many environmental and endogenous signals that collectively determine the overall plant phenotypic plasticity. Plant signaling molecules, also known as phytohormones, are fundamental to this process. These molecules act at low concentrations and regulate multiple aspects of plant fitness and development via complex signaling networks. By its nature, phytohormone research lies at the interface between chemistry and biology. Classically, the scientific community has always used synthetic phytohormones and analogs to study hormone functions and responses. However, recent advances in synthetic and combinational chemistry, have allowed a new field, plant chemical biology, to emerge and this has provided a powerful tool with which to study phytohormone function. Plant chemical biology is helping to address some of the most enduring questions in phytohormone research such as: Are there still undiscovered plant hormones? How can we identify novel signaling molecules? How can plants activate specific hormone responses in a tissue-specific manner? How can we modulate hormone responses in one developmental context without inducing detrimental effects on other processes? The chemical genomics approaches rely on the identification of small molecules modulating different biological processes and have recently identified active forms of plant hormones and molecules regulating many aspects of hormone synthesis, transport and response. We envision that the field of chemical genomics will continue to provide novel molecules able to elucidate specific aspects of hormone-mediated mechanisms. In addition, compounds blocking specific responses could uncover how complex biological responses are regulated. As we gain information about such compounds we can design small alterations to the chemical structure to further alter specificity, enhance affinity or modulate the activity of these compounds.
Collapse
Affiliation(s)
- Sandra Fonseca
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología- Consejo Superior de Investigaciones CientíficasMadrid, Spain
| | - Abel Rosado
- The Botany Department, University of British ColumbiaVancouver, BC, Canada
| | - John Vaughan-Hirsch
- Centre for Plant Integrative Biology, University of NottinghamNottingham, UK
| | - Anthony Bishopp
- Centre for Plant Integrative Biology, University of NottinghamNottingham, UK
| | - Andrea Chini
- Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología- Consejo Superior de Investigaciones CientíficasMadrid, Spain
- *Correspondence: Andrea Chini, Departamento de Genética Molecular de Plantas, Centro Nacional de Biotecnología- Consejo Superior de Investigaciones Científicas, Campus Universidad Autónoma, C/ Darwin 3, 28049 Madrid, Spain e-mail:
| |
Collapse
|
29
|
Rigal A, Ma Q, Robert S. Unraveling plant hormone signaling through the use of small molecules. FRONTIERS IN PLANT SCIENCE 2014; 5:373. [PMID: 25126092 PMCID: PMC4115670 DOI: 10.3389/fpls.2014.00373] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 07/11/2014] [Indexed: 05/03/2023]
Abstract
Plants have acquired the capacity to grow continuously and adjust their morphology in response to endogenous and external signals, leading to a high architectural plasticity. The dynamic and differential distribution of phytohormones is an essential factor in these developmental changes. Phytohormone perception is a fast but complex process modulating specific developmental reprogramming. In recent years, chemical genomics or the use of small molecules to modulate target protein function has emerged as a powerful strategy to study complex biological processes in plants such as hormone signaling. Small molecules can be applied in a conditional, dose-dependent and reversible manner, with the advantage of circumventing the limitations of lethality and functional redundancy inherent to traditional mutant screens. High-throughput screening of diverse chemical libraries has led to the identification of bioactive molecules able to induce plant hormone-related phenotypes. Characterization of the cognate targets and pathways of those molecules has allowed the identification of novel regulatory components, providing new insights into the molecular mechanisms of plant hormone signaling. An extensive structure-activity relationship (SAR) analysis of the natural phytohormones, their designed synthetic analogs and newly identified bioactive molecules has led to the determination of the structural requirements essential for their bioactivity. In this review, we will summarize the so far identified small molecules and their structural variants targeting specific phytohormone signaling pathways. We will highlight how the SAR analyses have enabled better interrogation of the molecular mechanisms of phytohormone responses. Finally, we will discuss how labeled/tagged hormone analogs can be exploited, as compelling tools to better understand hormone signaling and transport mechanisms.
Collapse
Affiliation(s)
| | | | - Stéphanie Robert
- *Correspondence: Stéphanie Robert, Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83 Umeå, Sweden e-mail:
| |
Collapse
|
30
|
de Saint Germain A, Bonhomme S, Boyer FD, Rameau C. Novel insights into strigolactone distribution and signalling. CURRENT OPINION IN PLANT BIOLOGY 2013; 16:583-9. [PMID: 23830996 DOI: 10.1016/j.pbi.2013.06.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 06/10/2013] [Accepted: 06/11/2013] [Indexed: 05/07/2023]
Abstract
Strigolactones (SLs), a group of small carotenoid-derived molecules, were first known for their function in the rhizosphere in both symbiotic and parasitic interactions. Most of the progress for deciphering SL biosynthesis and signalling pathways comes from the use of high branching mutants identified in several species demonstrating that SLs also play a hormonal role in plant development. How SLs are perceived by the different organisms on which they show bioactivity is a current major challenge for the growing SL research community. These molecules very likely predate the colonization of land by plants and represent a fascinating example of signalling molecules involved in key innovations during plant evolution.
Collapse
|
31
|
Pouvreau JB, Gaudin Z, Auger B, Lechat MM, Gauthier M, Delavault P, Simier P. A high-throughput seed germination assay for root parasitic plants. PLANT METHODS 2013; 9:32. [PMID: 23915294 PMCID: PMC3751143 DOI: 10.1186/1746-4811-9-32] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 07/07/2013] [Indexed: 05/18/2023]
Abstract
BACKGROUND Some root-parasitic plants belonging to the Orobanche, Phelipanche or Striga genus represent one of the most destructive and intractable weed problems to agricultural production in both developed and developing countries. Compared with most of the other weeds, parasitic weeds are difficult to control by conventional methods because of their life style. The main difficulties that currently limit the development of successful control methods are the ability of the parasite to produce a tremendous number of tiny seeds that may remain viable in the soil for more than 15 years. Seed germination requires induction by stimulants present in root exudates of host plants. Researches performed on these minute seeds are until now tedious and time-consuming because germination rate is usually evaluated in Petri-dish by counting germinated seeds under a binocular microscope. RESULTS We developed an easy and fast method for germination rate determination based on a standardized 96-well plate test coupled with spectrophotometric reading of tetrazolium salt (MTT) reduction. We adapted the Mosmann's protocol for cell cultures to germinating seeds and determined the conditions of seed stimulation and germination, MTT staining and formazan salt solubilization required to obtain a linear relationship between absorbance and germination rate. Dose-response analyses were presented as applications of interest for assessing half maximal effective or inhibitory concentrations of germination stimulants (strigolactones) or inhibitors (ABA), respectively, using four parameter logistic curves. CONCLUSION The developed MTT system is simple and accurate. It yields reproducible results for germination bioassays of parasitic plant seeds. This method is adapted to high-throughput screenings of allelochemicals (stimulants, inhibitors) or biological extracts on parasitic plant seed germination, and strengthens the investigations of distinctive features of parasitic plant germination.
Collapse
Affiliation(s)
- Jean-Bernard Pouvreau
- Laboratoire de Biologie et de Pathologie Végétales EA 1157, SFR 4207 QUASAV, Nantes University, 44322 Nantes, France
| | - Zachary Gaudin
- Laboratoire de Biologie et de Pathologie Végétales EA 1157, SFR 4207 QUASAV, Nantes University, 44322 Nantes, France
| | - Bathilde Auger
- Laboratoire de Biologie et de Pathologie Végétales EA 1157, SFR 4207 QUASAV, Nantes University, 44322 Nantes, France
| | - Marc-Marie Lechat
- Laboratoire de Biologie et de Pathologie Végétales EA 1157, SFR 4207 QUASAV, Nantes University, 44322 Nantes, France
| | - Mathieu Gauthier
- Laboratoire de Biologie et de Pathologie Végétales EA 1157, SFR 4207 QUASAV, Nantes University, 44322 Nantes, France
| | - Philippe Delavault
- Laboratoire de Biologie et de Pathologie Végétales EA 1157, SFR 4207 QUASAV, Nantes University, 44322 Nantes, France
| | - Philippe Simier
- Laboratoire de Biologie et de Pathologie Végétales EA 1157, SFR 4207 QUASAV, Nantes University, 44322 Nantes, France
| |
Collapse
|
32
|
Blangetti M, Rosso H, Prandi C, Deagostino A, Venturello P. Suzuki-miyaura cross-coupling in acylation reactions, scope and recent developments. Molecules 2013; 18:1188-213. [PMID: 23344208 PMCID: PMC6270041 DOI: 10.3390/molecules18011188] [Citation(s) in RCA: 121] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 01/08/2013] [Accepted: 01/09/2013] [Indexed: 11/16/2022] Open
Abstract
Since the first report and due to its handiness and wide scope, the Suzuki-Miyaura (SM) cross coupling reaction has become a routine methodology in many laboratories worldwide. With respect to other common transition metal catalyzed cross couplings, the SM reaction has been so far less exploited as a tool to introduce an acyl function into a specific substrate. In this review, the various approaches found in the literature will be considered, starting from the direct SM acylative coupling to the recent developments of cross coupling between boronates and acyl chlorides or anhydrides. Special attention will be dedicated to the use of masked acyl boronates, alkoxy styryl and alkoxy dienyl boronates as coupling partners. A final section will be then focused on the acyl SM reaction as key synthetic step in the framework of natural products synthesis.
Collapse
Affiliation(s)
- Marco Blangetti
- Centre for Synthesis and Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland; E-Mail:
| | - Heléna Rosso
- Chemistry Department, Turin University, via P. Giuria 7, 10125 Torino, Italy; E-Mails: (H.R.); (A.D.); (P.V.)
| | - Cristina Prandi
- Chemistry Department, Turin University, via P. Giuria 7, 10125 Torino, Italy; E-Mails: (H.R.); (A.D.); (P.V.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +39-11-670-7643; Fax: +39-11-670-7642
| | - Annamaria Deagostino
- Chemistry Department, Turin University, via P. Giuria 7, 10125 Torino, Italy; E-Mails: (H.R.); (A.D.); (P.V.)
| | - Paolo Venturello
- Chemistry Department, Turin University, via P. Giuria 7, 10125 Torino, Italy; E-Mails: (H.R.); (A.D.); (P.V.)
| |
Collapse
|