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Li W, Nguyen KH, Chu HD, Ha CV, Watanabe Y, Osakabe Y, Leyva-González MA, Sato M, Toyooka K, Voges L, Tanaka M, Mostofa MG, Seki M, Seo M, Yamaguchi S, Nelson DC, Tian C, Herrera-Estrella L, Tran LSP. The karrikin receptor KAI2 promotes drought resistance in Arabidopsis thaliana. PLoS Genet 2017; 13:e1007076. [PMID: 29131815 PMCID: PMC5703579 DOI: 10.1371/journal.pgen.1007076] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 11/27/2017] [Accepted: 10/15/2017] [Indexed: 11/18/2022] Open
Abstract
Drought causes substantial reductions in crop yields worldwide. Therefore, we set out to identify new chemical and genetic factors that regulate drought resistance in Arabidopsis thaliana. Karrikins (KARs) are a class of butenolide compounds found in smoke that promote seed germination, and have been reported to improve seedling vigor under stressful growth conditions. Here, we discovered that mutations in KARRIKIN INSENSITIVE2 (KAI2), encoding the proposed karrikin receptor, result in hypersensitivity to water deprivation. We performed transcriptomic, physiological and biochemical analyses of kai2 plants to understand the basis for KAI2-regulated drought resistance. We found that kai2 mutants have increased rates of water loss and drought-induced cell membrane damage, enlarged stomatal apertures, and higher cuticular permeability. In addition, kai2 plants have reduced anthocyanin biosynthesis during drought, and are hyposensitive to abscisic acid (ABA) in stomatal closure and cotyledon opening assays. We identified genes that are likely associated with the observed physiological and biochemical changes through a genome-wide transcriptome analysis of kai2 under both well-watered and dehydration conditions. These data provide evidence for crosstalk between ABA- and KAI2-dependent signaling pathways in regulating plant responses to drought. A comparison of the strigolactone receptor mutant d14 (DWARF14) to kai2 indicated that strigolactones also contributes to plant drought adaptation, although not by affecting cuticle development. Our findings suggest that chemical or genetic manipulation of KAI2 and D14 signaling may provide novel ways to improve drought resistance.
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Affiliation(s)
- Weiqiang Li
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Kien Huu Nguyen
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Ha Duc Chu
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Chien Van Ha
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Yasuko Watanabe
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Yuriko Osakabe
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - Marco Antonio Leyva-González
- Deutsche Forschungsgemeinschaft Center for Regenerative Therapies, Technische Universität Dresden, Fetscherstraße 105, Germany
| | - Mayuko Sato
- Mass Spectrometry and Microscopy Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Kiminori Toyooka
- Mass Spectrometry and Microscopy Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Laura Voges
- Department of Genetics, University of Georgia, Athens, Georgia, United States of America
| | - Maho Tanaka
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Mohammad Golam Mostofa
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Motoaki Seki
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Mitsunori Seo
- Dormancy and Adaptation Research Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Shinjiro Yamaguchi
- Department of Biomolecular Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - David C. Nelson
- Department of Botany & Plant Sciences, University of California, Riverside, Riverside, California, United States of America
| | - Chunjie Tian
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, People's Republic of China
| | - Luis Herrera-Estrella
- Laboratorio Nacional de Genómica para la Biodiversidad (Langebio)/Unidad de Genómica Avanzada, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Irapuato, Guanajuato, Mexico
| | - Lam-Son Phan Tran
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- * E-mail:
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Loera-Quezada MM, Leyva-González MA, Velázquez-Juárez G, Sanchez-Calderón L, Do Nascimento M, López-Arredondo D, Herrera-Estrella L. A novel genetic engineering platform for the effective management of biological contaminants for the production of microalgae. Plant Biotechnol J 2016; 14:2066-76. [PMID: 27007496 PMCID: PMC5043480 DOI: 10.1111/pbi.12564] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/16/2016] [Accepted: 03/18/2016] [Indexed: 05/20/2023]
Abstract
Microalgal cultivation that takes advantage of solar energy is one of the most cost-effective systems for the biotechnological production of biofuels, and a range of high value products, including pharmaceuticals, fertilizers and feed. However, one of the main constraints for the cultivation of microalgae is the potential contamination with biological pollutants, such as bacteria, fungi, zooplankton or other undesirable microalgae. In closed bioreactors, the control of contamination requires the sterilization of the media, containers and all materials, which increases the cost of production, whereas open pond systems severely limits the number of species that can be cultivated under extreme environmental conditions to prevent contaminations. Here, we report the metabolic engineering of Chlamydomonas reinhardtii to use phosphite as its sole phosphorus source by expressing the ptxD gene from Pseudomonas stutzeri WM88, which encodes a phosphite oxidoreductase able to oxidize phosphite into phosphate using NAD as a cofactor. Engineered C. reinhardtii lines are capable of becoming the dominant species in a mixed culture when fertilized with phosphite as a sole phosphorus source. Our results represent a new platform for the production of microalgae, potentially useful for both closed photobioreactors and open pond systems without the need for using sterile conditions nor antibiotics or herbicides to prevent contamination with biological pollutants.
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Affiliation(s)
- Maribel M Loera-Quezada
- Laboratorio Nacional de Genómica para la Biodiversidad, Unidad de Genómica Avanzada del Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Guanajuato, México
- StelaGenomics México S de RL de CV, Guanajuato, México
- Instituto de Ecología A.C., Xalapa, Veracruz, Mexico
| | | | | | | | - Mauro Do Nascimento
- Instituto de Investigaciones en Biodiversidad y Biotecnología, Buenos Aires, Argentina
| | | | - Luis Herrera-Estrella
- Laboratorio Nacional de Genómica para la Biodiversidad, Unidad de Genómica Avanzada del Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Guanajuato, México.
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Loera-Quezada MM, Leyva-González MA, López-Arredondo D, Herrera-Estrella L. Phosphite cannot be used as a phosphorus source but is non-toxic for microalgae. Plant Sci 2015; 231:124-30. [PMID: 25575997 DOI: 10.1016/j.plantsci.2014.11.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 11/28/2014] [Accepted: 11/29/2014] [Indexed: 05/16/2023]
Abstract
Phosphorous (P) plays a critical role for all living organisms as a structural component of RNA, DNA and phospholipids. Microalgae are autotrophs organisms that have been reported to only assimilate the fully oxidized phosphate (Pi) as P source. However, there are microorganisms capable of utilizing P reduced compounds (i.e. phosphite (Phi) and hypophosphite) as a sole P source, such as bacteria and cyanobacteria. In this study, we evaluated whether microalgae, such as Chlamydomonas reinhardtii, Botryococcus braunii and Ettlia oleoabundans, are capable of using Phi as a sole P source. Our studies revealed that these three microalgae are unable to use Phi as a sole P source. We also found that when Phi is present at concentrations equal or higher than that of Pi, Phi has an inhibitory effect on C. reinhardtii growth. However, since C. reinhardtii was able to survive for a long period of cultivation in the presence of high concentrations of Phi and to recover cell division capacity after transfer to media containing Pi, we noticed that Phi is not toxic for this microalga. We propose that the inhibitory effect of Phi on C. reinhardtii growth might be caused, at least in part, by a competition between the transport of Pi and Phi.
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Affiliation(s)
- Maribel M Loera-Quezada
- Laboratorio Nacional de Genómica para la Biodiversidad, Unidad de Genómica Avanzada del Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Km 9.6 carretera Irapuato León, 36500 Irapuato, Guanajuato, Mexico
| | | | - Damar López-Arredondo
- StelaGenomics México, S de RL de CV, Av. Camino Real de Guanajuato s/n, 36821 Irapuato, Guanajuato, Mexico.
| | - Luis Herrera-Estrella
- Laboratorio Nacional de Genómica para la Biodiversidad, Unidad de Genómica Avanzada del Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Km 9.6 carretera Irapuato León, 36500 Irapuato, Guanajuato, Mexico.
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López-Arredondo DL, Leyva-González MA, González-Morales SI, López-Bucio J, Herrera-Estrella L. Phosphate nutrition: improving low-phosphate tolerance in crops. Annu Rev Plant Biol 2014; 65:95-123. [PMID: 24579991 DOI: 10.1146/annurev-arplant-050213-035949] [Citation(s) in RCA: 369] [Impact Index Per Article: 36.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Phosphorus is an essential nutrient that is required for all major developmental processes and reproduction in plants. It is also a major constituent of the fertilizers required to sustain high-yield agriculture. Levels of phosphate--the only form of phosphorus that can be assimilated by plants--are suboptimal in most natural and agricultural ecosystems, and when phosphate is applied as fertilizer in soils, it is rapidly immobilized owing to fixation and microbial activity. Thus, cultivated plants use only approximately 20-30% of the applied phosphate, and the rest is lost, eventually causing water eutrophication. Recent advances in the understanding of mechanisms by which wild and cultivated species adapt to low-phosphate stress and the implementation of alternative bacterial pathways for phosphorus metabolism have started to allow the design of more effective breeding and genetic engineering strategies to produce highly phosphate-efficient crops, optimize fertilizer use, and reach agricultural sustainability with a lower environmental cost. In this review, we outline the current advances in research on the complex network of plant responses to low-phosphorus stress and discuss some strategies used to manipulate genes involved in phosphate uptake, remobilization, and metabolism to develop low-phosphate-tolerant crops, which could help in designing more efficient crops.
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Leyva-González MA, Ibarra-Laclette E, Cruz-Ramírez A, Herrera-Estrella L. Functional and transcriptome analysis reveals an acclimatization strategy for abiotic stress tolerance mediated by Arabidopsis NF-YA family members. PLoS One 2012; 7:e48138. [PMID: 23118940 PMCID: PMC3485258 DOI: 10.1371/journal.pone.0048138] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 09/20/2012] [Indexed: 11/22/2022] Open
Abstract
Nuclear Factor Y (NF-Y) is a heterotrimeric complex formed by NF-YA/NF-YB/NF-YC subunits that binds to the CCAAT-box in eukaryotic promoters. In contrast to other organisms, in which a single gene encodes each subunit, in plants gene families of over 10 members encode each of the subunits. Here we report that five members of the Arabidopsis thaliana NF-YA family are strongly induced by several stress conditions via transcriptional and miR169-related post-transcriptional mechanisms. Overexpression of NF-YA2, 7 and 10 resulted in dwarf late-senescent plants with enhanced tolerance to several types of abiotic stress. These phenotypes are related to alterations in sucrose/starch balance and cell elongation observed in NF-YA overexpressing plants. The use of transcriptomic analysis of transgenic plants that express miR169-resistant versions of NF-YA2, 3, 7, and 10 under an estradiol inducible system, as well as a dominant-repressor version of NF-YA2 revealed a set of genes, whose promoters are enriched in NF-Y binding sites (CCAAT-box) and that may be directly regulated by the NF-Y complex. This analysis also suggests that NF-YAs could participate in modulating gene regulation through positive and negative mechanisms. We propose a model in which the increase in NF-YA transcript levels in response to abiotic stress is part of an adaptive response to adverse environmental conditions in which a reduction in plant growth rate plays a key role.
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Affiliation(s)
| | | | | | - Luis Herrera-Estrella
- Laboratorio Nacional de Genómica para la Biodiversidad (LANGEBIO), Centro de Investigación y Estudios Avanzados Irapuato, Irapuato, Guanajuato, México
- * E-mail:
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Sánchez-Calderón L, Chacón-López A, Alatorre-Cobos F, Leyva-González MA, Herrera-Estrella L. Sensing and Signaling of PO 4 3−. Signaling and Communication in Plants 2011. [DOI: 10.1007/978-3-642-14369-4_7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Abraham-Juárez MJ, Martínez-Hernández A, Leyva-González MA, Herrera-Estrella L, Simpson J. Class I KNOX genes are associated with organogenesis during bulbil formation in Agave tequilana. J Exp Bot 2010; 61:4055-67. [PMID: 20627900 DOI: 10.1093/jxb/erq215] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Bulbil formation in Agave tequilana was analysed with the objective of understanding this phenomenon at the molecular and cellular levels. Bulbils formed 14-45 d after induction and were associated with rearrangements in tissue structure and accelerated cell multiplication. Changes at the cellular level during bulbil development were documented by histological analysis. In addition, several cDNA libraries produced from different stages of bulbil development were generated and partially sequenced. Sequence analysis led to the identification of candidate genes potentially involved in the initiation and development of bulbils in Agave, including two putative class I KNOX genes. Real-time reverse transcription-PCR and in situ hybridization revealed that expression of the putative Agave KNOXI genes occurs at bulbil initiation and specifically in tissue where meristems will develop. Functional analysis of Agave KNOXI genes in Arabidopsis thaliana showed the characteristic lobed phenotype of KNOXI ectopic expression in leaves, although a slightly different phenotype was observed for each of the two Agave genes. An Arabidopsis KNOXI (knat1) mutant line (CS30) was successfully complemented with one of the Agave KNOX genes and partially complemented by the other. Analysis of the expression of the endogenous Arabidopsis genes KNAT1, KNAT6, and AS1 in the transformed lines ectopically expressing or complemented by the Agave KNOX genes again showed different regulatory patterns for each Agave gene. These results show that Agave KNOX genes are functionally similar to class I KNOX genes and suggest that spatial and temporal control of their expression is essential during bulbil formation in A. tequilana.
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