151
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Wang W, Ding G, White PJ, Wang M, Zou J, Xu F, Hammond JP, Shi L. Genetic dissection of the shoot and root ionomes of Brassica napus grown with contrasting phosphate supplies. ANNALS OF BOTANY 2020; 126:119-140. [PMID: 32221530 PMCID: PMC7304470 DOI: 10.1093/aob/mcaa055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 03/26/2020] [Indexed: 05/09/2023]
Abstract
BACKGROUND AND AIMS Mineral elements have many essential and beneficial functions in plants. Phosphorus (P) deficiency can result in changes in the ionomes of plant organs. The aims of this study were to characterize the effects of P supply on the ionomes of shoots and roots, and to identify chromosomal quantitative trait loci (QTLs) for shoot and root ionomic traits, as well as those affecting the partitioning of mineral elements between shoot and root in Brassica napus grown with contrasting P supplies. METHODS Shoot and root concentrations of 11 mineral elements (B, Ca, Cu, Fe, K, Mg, Mn, Na, P, S and Zn) were investigated by inductively coupled plasma optical emission spectrometry (ICP-OES) in a Brassica napus double haploid population grown at an optimal (OP) and a low phosphorus supply (LP) in an agar system. Shoot, root and plant contents, and the partitioning of mineral elements between shoot and root were calculated. KEY RESULTS The tissue concentrations of B, Ca, Cu, K, Mg, Mn, Na, P and Zn were reduced by P starvation, while the concentration of Fe was increased by P starvation in the BnaTNDH population. A total of 133 and 123 QTLs for shoot and root ionomic traits were identified at OP and LP, respectively. A major QTL cluster on chromosome C07 had a significant effect on shoot Mg and S concentrations at LP and was narrowed down to a 2.1 Mb region using an advanced backcross population. CONCLUSIONS The tissue concentration and partitioning of each mineral element was affected differently by P starvation. There was a significant difference in mineral element composition between shoots and roots. Identification of the genes underlying these QTLs will enhance our understanding of processes affecting the uptake and partitioning of mineral elements in Brassica napus.
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Affiliation(s)
- Wei Wang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- Microelement Research Centre, Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
| | - Guangda Ding
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- Microelement Research Centre, Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
| | - Philip J White
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- Microelement Research Centre, Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
- The James Hutton Institute, Invergowrie, Dundee, UK
| | - Meng Wang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Jun Zou
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Fangsen Xu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- Microelement Research Centre, Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
| | - John P Hammond
- School of Agriculture, Policy and Development, University of Reading, Reading, UK
- Southern Cross Plant Science, Southern Cross University, Lismore, Australia
| | - Lei Shi
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
- Microelement Research Centre, Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
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152
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Ueda Y, Kiba T, Yanagisawa S. Nitrate-inducible NIGT1 proteins modulate phosphate uptake and starvation signalling via transcriptional regulation of SPX genes. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 102:448-466. [PMID: 31811679 DOI: 10.1111/tpj.14637] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/14/2019] [Accepted: 12/03/2019] [Indexed: 05/20/2023]
Abstract
Nitrogen and phosphorus are two major soil nutrients required for plant growth. Because requirements of both these elements are interdependent, acquisition of one must be balanced with that of the other. However, the mechanism underlying this balanced acquisition remains unclear. Here, we show by in vivo luciferase imaging that the presence of nitrogen sources is a pre-requisite for strong activation of phosphate starvation responses. In addition, we also show that nitrate rather than ammonium is a potent modulator of phosphate starvation-induced gene expression. Furthermore, protoplast-based transient expression assay and chromatin immunoprecipitation assay demonstrate that NIGT1 GARP-type transcriptional repressors, which are encoded by nitrate-inducible genes, directly bind to and repress the promoters of genes encoding SPX proteins. Consistent with the role of SPX proteins in the suppression of the PHR1 transcriptional activator, the master regulator for phosphate starvation responses, nitrate-dependent enhancement of phosphate starvation responses, such as accumulation of anthocyanin and promotion of root hair growth and phosphate uptake, was less evident in the nigt1.1-nigt1.4 quadruple mutant. Consistently, NIGT1 overexpression alleviated the reduction in phosphate uptake under phosphate-replete conditions. We further reveal the intricate feedback regulations involving PHR1, NIGT1, and SPX family proteins in the phosphate starvation signalling network. Importantly, results of mutant protoplast-based assays and in planta analysis using NIGT1 overexpression in the spx1 spx2 double mutant indicated that the NIGT1-SPX-PHR cascade mediates nitrogen status-responsive regulation of phosphate uptake and starvation signalling. These findings uncover the mechanism underlying the balanced acquisition of nitrogen and phosphorus.
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Affiliation(s)
- Yoshiaki Ueda
- Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Takatoshi Kiba
- Center for Sustainable Resource Science, RIKEN, Tsurumi, Yokohama, 230-0045, Japan
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Shuichi Yanagisawa
- Biotechnology Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
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153
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Waidmann S, Sarkel E, Kleine-Vehn J. Same same, but different: growth responses of primary and lateral roots. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:2397-2411. [PMID: 31956903 PMCID: PMC7178446 DOI: 10.1093/jxb/eraa027] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 01/15/2020] [Indexed: 05/20/2023]
Abstract
The root system architecture describes the shape and spatial arrangement of roots within the soil. Its spatial distribution depends on growth and branching rates as well as directional organ growth. The embryonic primary root gives rise to lateral (secondary) roots, and the ratio of both root types changes over the life span of a plant. Most studies have focused on the growth of primary roots and the development of lateral root primordia. Comparably less is known about the growth regulation of secondary root organs. Here, we review similarities and differences between primary and lateral root organ growth, and emphasize particularly how external stimuli and internal signals differentially integrate root system growth.
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Affiliation(s)
- Sascha Waidmann
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria
| | - Elizabeth Sarkel
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria
| | - Jürgen Kleine-Vehn
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria
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154
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Nakano Y, Kusunoki K, Hoekenga OA, Tanaka K, Iuchi S, Sakata Y, Kobayashi M, Yamamoto YY, Koyama H, Kobayashi Y. Genome-Wide Association Study and Genomic Prediction Elucidate the Distinct Genetic Architecture of Aluminum and Proton Tolerance in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2020; 11:405. [PMID: 32328080 PMCID: PMC7160251 DOI: 10.3389/fpls.2020.00405] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/20/2020] [Indexed: 05/27/2023]
Abstract
Under acid soil conditions, Al stress and proton stress can occur, reducing root growth and function. However, these stressors are distinct, and tolerance to each is governed by multiple physiological processes. To better understand the genes that underlie these coincidental but experimentally separable stresses, a genome-wide association study (GWAS) and genomic prediction (GP) models were created for approximately 200 diverse Arabidopsis thaliana accessions. GWAS and genomic prediction identified 140/160 SNPs associated with Al and proton tolerance, respectively, which explained approximately 70% of the variance observed. Reverse genetics of the genes in loci identified novel Al and proton tolerance genes, including TON1-RECRUITING MOTIF 28 (AtTRM28) and THIOREDOXIN H-TYPE 1 (AtTRX1), as well as genes known to be associated with tolerance, such as the Al-activated malate transporter, AtALMT1. Additionally, variation in Al tolerance was partially explained by expression level polymorphisms of AtALMT1 and AtTRX1 caused by cis-regulatory allelic variation. These results suggest that we successfully identified the loci that regulate Al and proton tolerance. Furthermore, very small numbers of loci were shared by Al and proton tolerance as determined by the GWAS. There were substantial differences between the phenotype predicted by genomic prediction and the observed phenotype for Al tolerance. This suggested that the GWAS-undetectable genetic factors (e.g., rare-allele mutations) contributing to the variation of tolerance were more important for Al tolerance than for proton tolerance. This study provides important new insights into the genetic architecture that produces variation in the tolerance of acid soil.
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Affiliation(s)
- Yuki Nakano
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Kazutaka Kusunoki
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | | | - Keisuke Tanaka
- NODAI Genome Research Center, Tokyo University of Agriculture, Tokyo, Japan
| | - Satoshi Iuchi
- Experimental Plant Division, RIKEN BioResource Research Center, Tsukuba, Japan
| | - Yoichi Sakata
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Masatomo Kobayashi
- Experimental Plant Division, RIKEN BioResource Research Center, Tsukuba, Japan
| | | | - Hiroyuki Koyama
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Yuriko Kobayashi
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
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155
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Gong Z, Xiong L, Shi H, Yang S, Herrera-Estrella LR, Xu G, Chao DY, Li J, Wang PY, Qin F, Li J, Ding Y, Shi Y, Wang Y, Yang Y, Guo Y, Zhu JK. Plant abiotic stress response and nutrient use efficiency. SCIENCE CHINA-LIFE SCIENCES 2020; 63:635-674. [PMID: 32246404 DOI: 10.1007/s11427-020-1683-x] [Citation(s) in RCA: 506] [Impact Index Per Article: 126.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 03/17/2020] [Indexed: 12/15/2022]
Abstract
Abiotic stresses and soil nutrient limitations are major environmental conditions that reduce plant growth, productivity and quality. Plants have evolved mechanisms to perceive these environmental challenges, transmit the stress signals within cells as well as between cells and tissues, and make appropriate adjustments in their growth and development in order to survive and reproduce. In recent years, significant progress has been made on many fronts of the stress signaling research, particularly in understanding the downstream signaling events that culminate at the activation of stress- and nutrient limitation-responsive genes, cellular ion homeostasis, and growth adjustment. However, the revelation of the early events of stress signaling, particularly the identification of primary stress sensors, still lags behind. In this review, we summarize recent work on the genetic and molecular mechanisms of plant abiotic stress and nutrient limitation sensing and signaling and discuss new directions for future studies.
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Affiliation(s)
- Zhizhong Gong
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Liming Xiong
- Department of Biology, Hong Kong Baptist University, Kowlong Tong, Hong Kong, China
| | - Huazhong Shi
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
| | - Shuhua Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Luis R Herrera-Estrella
- Plant and Soil Science Department (IGCAST), Texas Tech University, Lubbock, TX, 79409, USA.,Unidad de Genómica Avanzada (Langebio), Centro de Investigación y de Estudios Avanzados, Irapuato, 36610, México.,College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Guohua Xu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dai-Yin Chao
- National Key laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jingrui Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Peng-Yun Wang
- School of Life Science, Henan University, Kaifeng, 457000, China
| | - Feng Qin
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Jijang Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yanglin Ding
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yiting Shi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yu Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yongqing Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yan Guo
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China.
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
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156
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Khandal H, Singh AP, Chattopadhyay D. The MicroRNA397b -LACCASE2 Module Regulates Root Lignification under Water and Phosphate Deficiency. PLANT PHYSIOLOGY 2020; 182:1387-1403. [PMID: 31949029 PMCID: PMC7054887 DOI: 10.1104/pp.19.00921] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 01/07/2020] [Indexed: 05/18/2023]
Abstract
Deficiency of water and phosphate induce lignin deposition in roots. LACCASEs, a family of cell wall-localized multicopper oxidases, are involved in lignin biosynthesis. We demonstrate here that LACCASE2 (LAC2) acts as a negative regulator of lignin deposition in root vascular tissues during water deficit. An Arabidopsis (Arabidopsis thaliana) transfer DNA insertion mutant of LAC2 displayed a short primary root and high lignin deposition in root vascular tissues. However, restoration of LAC2 expression rescued these phenotypes. LAC2 expression was significantly down-regulated under water deficit and posttranscriptionally regulated by microRNA397b (miR397b) in roots under normal and water-deficit conditions. Down-regulation of miR397b activity increased LAC2 expression and root length, and decreased lignin content in root vasculature. Similarly, phosphate (Pi) deficiency inversely affected miR397b and LAC2 expression. Lignin deposition in the root elongation zone under Pi-limited conditions was dependent on LAC2 expression. Localized iron accumulation and callose deposition in the root elongation zone under Pi deficiency increased with LAC2-dependent lignification, suggesting a direct relationship between these processes. Our study reveals a regulatory role for the miR397b-LAC2 module in root lignification during water and phosphate deficiency.
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Affiliation(s)
- Hitaishi Khandal
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Amar Pal Singh
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Debasis Chattopadhyay
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India
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157
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Xu JM, Wang ZQ, Wang JY, Li PF, Jin JF, Chen WW, Fan W, Kochian LV, Zheng SJ, Yang JL. Low phosphate represses histone deacetylase complex1 to regulate root system architecture remodeling in Arabidopsis. THE NEW PHYTOLOGIST 2020; 225:1732-1745. [PMID: 31608986 DOI: 10.1111/nph.16264] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 10/04/2019] [Indexed: 05/21/2023]
Abstract
The mechanisms involved in the regulation of gene expression in response to phosphate (Pi) deficiency have been extensively studied, but their chromatin-level regulation remains poorly understood. We examined the role of histone acetylation in response to Pi deficiency by using the histone deacetylase complex1 (hdc1) mutant. Genes involved in root system architecture (RSA) remodeling were analyzed by quantitative real-time polymerase chain reaction (qPCR) and chromatin immunoprecipitation qPCR. We demonstrate that histone H3 acetylation increased under Pi deficiency, and the hdc1 mutant was hypersensitive to Pi deficiency, with primary root growth inhibition and increases in root hair number. Concomitantly, Pi deficiency repressed HDC1 protein abundances. Under Pi deficiency, hdc1 accumulated higher concentrations of Fe3+ in the root tips and had higher expression of genes involved in RSA remodeling, such as ALUMINUM-ACTIVATED MALATE TRANSPORTER1 (ALMT1), LOW PHOSPHATE ROOT1 (LPR1), and LPR2 compared with wild-type plants. Furthermore, Pi deficiency enriched the histone H3 acetylation of ALMT1 and LPR1. Finally, genetic evidence showed that LPR1/2 was epistatic to HDC1 in regulating RSA remodeling. Our results suggest a chromatin-level control of Pi starvation responses in which HDC1-mediated histone H3 deacetylation represses the transcriptional activation of genes involved in RSA remodeling in Arabidopsis.
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Affiliation(s)
- Jia Meng Xu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, College of Life Science, Shandong University, Jinan, 250100, China
| | - Zhan Qi Wang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China
| | - Jia Yi Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Peng Fei Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jian Feng Jin
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wei Wei Chen
- Research Centre for Plant RNA Signaling, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Wei Fan
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, China
| | - Leon V Kochian
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, SK, S7N 4J8, Canada
| | - Shao Jian Zheng
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jian Li Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
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158
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Ojeda-Rivera JO, Oropeza-Aburto A, Herrera-Estrella L. Dissection of Root Transcriptional Responses to Low pH, Aluminum Toxicity and Iron Excess Under Pi-Limiting Conditions in Arabidopsis Wild-Type and stop1 Seedlings. FRONTIERS IN PLANT SCIENCE 2020; 11:01200. [PMID: 33133111 PMCID: PMC7550639 DOI: 10.3389/fpls.2020.01200] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 07/23/2020] [Indexed: 05/10/2023]
Abstract
Acidic soils constrain plant growth and development in natural and agricultural ecosystems because of the combination of multiple stress factors including high levels of Fe3+, toxic levels of Al3+, low phosphate (Pi) availability and proton rhizotoxicity. The transcription factor SENSITIVE TO PROTON RHIZOTOXICITY (STOP1) has been reported to underlie root adaptation to low pH, Al3+ toxicity and low Pi availability by activating the expression of genes involved in organic acid exudation, regulation of pH homeostasis, Al3+ detoxification and root architecture remodeling in Arabidopsis thaliana. However, the mechanisms by which STOP1 integrates these environmental signals to trigger adaptive responses to variable conditions in acidic soils remain to be unraveled. It is unknown whether STOP1 activates the expression of a single set of genes that enables root adaptation to acidic soils or multiple gene sets depending on the combination of different types of stress present in acidic soils. Previous transcriptomic studies of stop1 mutants and wild-type plants analyzed the effect of individual types of stress prevalent in acidic soils. An integrative study of the transcriptional regulation pathways that are activated by STOP1 under the combination of major stresses common in acidic soils is lacking. Using RNA-seq, we performed a transcriptional dissection of wild-type and stop1 root responses, individually or in combination, to toxic levels of Al3+, low Pi availability, low pH and Fe excess. We show that the level of STOP1 is post-transcriptionally and coordinately upregulated in the roots of seedlings exposed to single or combined stress factors. The accumulation of STOP1 correlates with the transcriptional activation of stress-specific and common gene sets that are activated in the roots of wild-type seedlings but not in stop1. Our data indicate that perception of low Pi availability, low pH, Fe excess and Al toxicity converges at two levels via STOP1 signaling: post-translationally through the regulation of STOP1 turnover, and transcriptionally, via the activation of STOP1-dependent gene expression that enables the root to better adapt to abiotic stress factors present in acidic soils.
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Affiliation(s)
- Jonathan Odilón Ojeda-Rivera
- Laboratorio Nacional de Genómica para la Biodiversidad (UGA) del Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, México
| | - Araceli Oropeza-Aburto
- Laboratorio Nacional de Genómica para la Biodiversidad (UGA) del Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, México
| | - Luis Herrera-Estrella
- Laboratorio Nacional de Genómica para la Biodiversidad (UGA) del Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, México
- Plant and Soil Science Department, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX, United States
- *Correspondence: Luis Herrera-Estrella, ;
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159
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He Y, Li R, Lin F, Xiong Y, Wang L, Wang B, Guo J, Hu C. Transcriptome Changes Induced by Different Potassium Levels in Banana Roots. PLANTS (BASEL, SWITZERLAND) 2019; 9:E11. [PMID: 31861661 PMCID: PMC7020221 DOI: 10.3390/plants9010011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/14/2019] [Accepted: 12/16/2019] [Indexed: 12/14/2022]
Abstract
Potassium plays an important role in enhancing plant resistance to biological and abiotic stresses and improving fruit quality. To study the effect of potassium nutrient levels on banana root growth and its regulation mechanism, four potassium concentrations were designed to treat banana roots from no potassium to high potassium. The results indicated that K2 (3 mmol/L K2SO4) treatment was a relatively normal potassium concentration for the growth of banana root, and too high or too low potassium concentration was not conducive to the growth of banana root. By comparing the transcriptome data in each treatment in pairs, 4454 differentially expressed genes were obtained. There were obvious differences in gene function enrichment in root systems treated with different concentrations of potassium. Six significant expression profiles (profile 0, 1, 2, 7, 9 and 13) were identified by STEM analysis. The hub genes were FKF1, HsP70-1, NRT1/PTR5, CRY1, and ZIP11 in the profile 0; CYP51 in profile 1; SOS1 in profile 7; THA, LKR/SDH, MCC, C4H, CHI, F3'H, 2 PR1s, BSP, TLP, ICS, RO, chitinase and peroxidase in profile 9. Our results provide a comprehensive and systematic analysis of the gene regulation network in banana roots under different potassium stress.
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Affiliation(s)
- Yingdui He
- College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China;
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (F.L.); (Y.X.); (L.W.); (B.W.)
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Ruimei Li
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China;
| | - Fei Lin
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (F.L.); (Y.X.); (L.W.); (B.W.)
| | - Ying Xiong
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (F.L.); (Y.X.); (L.W.); (B.W.)
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China;
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Lixia Wang
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (F.L.); (Y.X.); (L.W.); (B.W.)
| | - Bizun Wang
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; (F.L.); (Y.X.); (L.W.); (B.W.)
| | - Jianchun Guo
- College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China;
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China;
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Chengxiao Hu
- College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China;
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160
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Giovannetti M, Göschl C, Dietzen C, Andersen SU, Kopriva S, Busch W. Identification of novel genes involved in phosphate accumulation in Lotus japonicus through Genome Wide Association mapping of root system architecture and anion content. PLoS Genet 2019; 15:e1008126. [PMID: 31856195 PMCID: PMC6941899 DOI: 10.1371/journal.pgen.1008126] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 01/03/2020] [Accepted: 11/21/2019] [Indexed: 12/12/2022] Open
Abstract
Phosphate represents a major limiting factor for plant productivity. Plants have evolved different solutions to adapt to phosphate limitation ranging from a profound tuning of their root system architecture and metabolic profile to the evolution of widespread mutualistic interactions. Here we elucidated plant responses and their genetic basis to different phosphate levels in a plant species that is widely used as a model for AM symbiosis: Lotus japonicus. Rather than focussing on a single model strain, we measured root growth and anion content in response to different levels of phosphate in 130 Lotus natural accessions. This allowed us not only to uncover common as well as divergent responses within this species, but also enabled Genome Wide Association Studies by which we identified new genes regulating phosphate homeostasis in Lotus. Among them, we showed that insertional mutants of a cytochrome B5 reductase and a Leucine-Rich-Repeat receptor showed different phosphate concentration in plants grown under phosphate sufficient condition. Under low phosphate conditions, we found a correlation between plant biomass and the decrease of plant phosphate concentration in plant tissues, representing a dilution effect. Altogether our data of the genetic and phenotypic variation within a species capable of AM complements studies that have been conducted in Arabidopsis, and advances our understanding of the continuum of genotype by phosphate level interaction existing throughout dicot plants.
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Affiliation(s)
- Marco Giovannetti
- Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna, Austria
| | - Christian Göschl
- Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna, Austria
| | - Christof Dietzen
- University of Cologne, Botanical Institute and Cluster of Excellence on Plant Sciences (CEPLAS), Cologne, Germany
| | - Stig U. Andersen
- Department of Molecular Biology and Genetics, Aarhus University, Denmark
| | - Stanislav Kopriva
- University of Cologne, Botanical Institute and Cluster of Excellence on Plant Sciences (CEPLAS), Cologne, Germany
| | - Wolfgang Busch
- Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna, Austria
- Salk Institute for Biological Studies, Plant Molecular and Cellular Biology Laboratory, and Integrative Biology Laboratory, La Jolla, California, United States of America
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161
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Bouain N, Korte A, Satbhai SB, Nam HI, Rhee SY, Busch W, Rouached H. Systems genomics approaches provide new insights into Arabidopsis thaliana root growth regulation under combinatorial mineral nutrient limitation. PLoS Genet 2019; 15:e1008392. [PMID: 31693663 PMCID: PMC6834251 DOI: 10.1371/journal.pgen.1008392] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 08/29/2019] [Indexed: 01/08/2023] Open
Abstract
The molecular mechanisms by which plants modulate their root growth rate (RGR) in response to nutrient deficiency are largely unknown. Using Arabidopsis thaliana accessions, we analyzed RGR variation under combinatorial mineral nutrient deficiencies involving phosphorus (P), iron (Fe), and zinc (Zn). While -P stimulated early RGR of most accessions, -Fe or -Zn reduced it. The combination of either -P-Fe or -P-Zn led to suppression of the growth inhibition exerted by -Fe or -Zn alone. Surprisingly, root growth responses of the reference accession Columbia (Col-0) were not representative of the species under -P nor -Zn. Using a systems approach that combines GWAS, network-based candidate identification, and reverse genetic screen, we identified new genes that regulate root growth in -P-Fe: VIM1, FH6, and VDAC3. Our findings provide a framework to systematically identifying favorable allelic variations to improve root growth, and to better understand how plants sense and respond to multiple environmental cues. Plants thrive in highly heterogenous soils. How they compute a multitude of contrasting stimuli and mount an adaptive response without a centralized information processing unit is an intriguing question. For instance, below ground, roots can sense and respond to the single or multiple nutrient stresses, and adjust its growth rate accordingly. Nevertheless, the genetic architecture of root growth responses under single and combined stress remains poorly understood. To fill this gap in our understanding about such crucial phenomenon for plant survival, we explored the natural variation of root growth rate (RGR) in Arabidopsis grown under single and combined nutritional stress, including deficiencies of iron (-Fe), zinc (-Zn), phosphate and iron (-P-Fe) and phosphate and zinc (-P-Zn). Our GWAS revealed distinct genetic architectures underlying root growth responses to single or combined nutrient stresses. By integrating GWAS and coexpression networks, we identified and validated genes controlling the variation of root growth to combined nutrient-deficiency, namely VARIANT IN METHYLATION 1, FORMIN-LIKE-PROTEIN-6 and VOLTAGE-DEPENDENT ANION-SELECTIVE CHANNEL PROTEIN 3. Our findings provide a framework to accelerate future research aiming at better understanding how plants sense and respond to multiple environmental inputs, and promise to help designing new agronomical and biotechnological strategies to improve root growth.
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Affiliation(s)
- Nadia Bouain
- BPMP, Univ Montpellier, CNRS, INRA, SupAgro, Montpellier, France
| | - Arthur Korte
- Evolutionary Genomics, Center for Computational and Theoretical Biology (CCTB), University Würzburg, Würzburg, Germany
| | - Santosh B. Satbhai
- Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna, Austria
- Plant Molecular and Cellular Biology Laboratory, and Integrative Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Hye-In Nam
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California, United States of America
| | - Seung Y. Rhee
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California, United States of America
- * E-mail: (SYR); (WB); (HR)
| | - Wolfgang Busch
- Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna, Austria
- Plant Molecular and Cellular Biology Laboratory, and Integrative Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
- * E-mail: (SYR); (WB); (HR)
| | - Hatem Rouached
- BPMP, Univ Montpellier, CNRS, INRA, SupAgro, Montpellier, France
- * E-mail: (SYR); (WB); (HR)
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162
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Zheng Z, Wang Z, Wang X, Liu D. Blue Light-Triggered Chemical Reactions Underlie Phosphate Deficiency-Induced Inhibition of Root Elongation of Arabidopsis Seedlings Grown in Petri Dishes. MOLECULAR PLANT 2019; 12:1515-1523. [PMID: 31419529 DOI: 10.1016/j.molp.2019.08.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/15/2019] [Accepted: 08/02/2019] [Indexed: 05/22/2023]
Abstract
To tolerate phosphate (Pi) deficiency in the environment, plants alter their developmental and metabolic programs. In the past two decades, researchers have extensively used Petri dish-grown seedlings of the model plant Arabidopsis thaliana to study the molecular mechanisms underlying root developmental responses to Pi deficiency. A typical developmental response of the Petri dish-grown Arabidopsis seedlings to Pi deficiency is the inhibited growth of primary root (PR). This response is generally thought to enhance the production of lateral roots and root hairs, which increases the plant's ability to obtain Pi and is therefore regarded as an active cellular response. Here, we report that direct illumination of root surface with blue light is critical and sufficient for Pi deficiency-induced inhibition of PR growth in Arabidopsis seedlings. We further show that a blue light-triggered malate-mediated photo-Fenton reaction and a canonical Fenton reaction form an Fe redox cycle in the root apoplast. This Fe redox cycle results in the production of hydroxyl radicals that inhibit PR growth. In addition to revealing the molecular mechanism underlying Pi deficiency-induced inhibition of PR growth, our work demonstrated that this developmental change is not an active cellular response; instead, it is a phenotype resulting from root growth in transparent Petri dishes. This finding is significant because illuminated, transparent Petri dishes have been routinely used to study Arabidopsis root responses to environmental changes.
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Affiliation(s)
- Zai Zheng
- MOE Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Zhen Wang
- MOE Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Xiaoyue Wang
- MOE Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Dong Liu
- MOE Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China.
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163
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Li XJ, Yang JL, Hao B, Lu YC, Qian ZL, Li Y, Ye S, Tang JR, Chen M, Long GQ, Zhao Y, Zhang GH, Chen JW, Fan W, Yang SC. Comparative transcriptome and metabolome analyses provide new insights into the molecular mechanisms underlying taproot thickening in Panax notoginseng. BMC PLANT BIOLOGY 2019; 19:451. [PMID: 31655543 PMCID: PMC6815444 DOI: 10.1186/s12870-019-2067-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 10/02/2019] [Indexed: 05/19/2023]
Abstract
BACKGROUND Taproot thickening is a complex biological process that is dependent on the coordinated expression of genes controlled by both environmental and developmental factors. Panax notoginseng is an important Chinese medicinal herb that is characterized by an enlarged taproot as the main organ of saponin accumulation. However, the molecular mechanisms of taproot enlargement are poorly understood. RESULTS A total of 29,957 differentially expressed genes (DEGs) were identified during the thickening process in the taproots of P. notoginseng. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment revealed that DEGs associated with "plant hormone signal transduction," "starch and sucrose metabolism," and "phenylpropanoid biosynthesis" were predominantly enriched. Further analysis identified some critical genes (e.g., RNase-like major storage protein, DA1-related protein, and Starch branching enzyme I) and metabolites (e.g., sucrose, glucose, fructose, malate, and arginine) that potentially control taproot thickening. Several aspects including hormone crosstalk, transcriptional regulation, homeostatic regulation between sugar and starch, and cell wall metabolism, were identified as important for the thickening process in the taproot of P. notoginseng. CONCLUSION The results provide a molecular regulatory network of taproot thickening in P. notoginseng and facilitate the further characterization of the genes responsible for taproot formation in root medicinal plants or crops.
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Affiliation(s)
- Xue-Jiao Li
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, 650201 China
| | - Jian-Li Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Bing Hao
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Ying-Chun Lu
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Zhi-Long Qian
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Ying Li
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Shuang Ye
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Jun-Rong Tang
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Mo Chen
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Guang-Qiang Long
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Yan Zhao
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Guang-Hui Zhang
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Jun-Wen Chen
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Wei Fan
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
| | - Sheng-Chao Yang
- State Key Laboratory of Conservation and Utilization of Bio-resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National& Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming, 650201 China
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164
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Wu W, Zhu S, Chen Q, Lin Y, Tian J, Liang C. Cell Wall Proteins Play Critical Roles in Plant Adaptation to Phosphorus Deficiency. Int J Mol Sci 2019; 20:E5259. [PMID: 31652783 PMCID: PMC6862644 DOI: 10.3390/ijms20215259] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/12/2019] [Accepted: 10/14/2019] [Indexed: 02/07/2023] Open
Abstract
Phosphorus is one of the mineral nutrient elements essential for plant growth and development. Low phosphate (Pi) availability in soils adversely affects crop production. To cope with low P stress, remodeling of root morphology and architecture is generally observed in plants, which must be accompanied by root cell wall modifications. It has been documented that cell wall proteins (CWPs) play critical roles in shaping cell walls, transmitting signals, and protecting cells against environmental stresses. However, understanding of the functions of CWPs involved in plant adaptation to P deficiency remains fragmentary. The aim of this review was to summarize advances in identification and functional characterization of CWPs in responses to P deficiency, and to highlight the critical roles of CWPs in mediating root growth, P reutilization, and mobilization in plants.
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Affiliation(s)
- Weiwei Wu
- Root Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China.
| | - Shengnan Zhu
- Root Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China.
| | - Qianqian Chen
- Root Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China.
| | - Yan Lin
- Root Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China.
| | - Jiang Tian
- Root Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China.
| | - Cuiyue Liang
- Root Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China.
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165
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Zhang F, Yan X, Han X, Tang R, Chu M, Yang Y, Yang YH, Zhao F, Fu A, Luan S, Lan W. A Defective Vacuolar Proton Pump Enhances Aluminum Tolerance by Reducing Vacuole Sequestration of Organic Acids. PLANT PHYSIOLOGY 2019; 181:743-761. [PMID: 31350362 PMCID: PMC6776860 DOI: 10.1104/pp.19.00626] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/18/2019] [Accepted: 07/18/2019] [Indexed: 05/04/2023]
Abstract
Plants cope with aluminum (Al) toxicity by secreting organic acids (OAs) into the apoplastic space, which is driven by proton (H+) pumps. Here, we show that mutation of vacuolar H+-translocating adenosine triphosphatase (H+-ATPase) subunit a2 (VHA-a2) and VHA-a3 of the vacuolar H+-ATPase enhances Al resistance in Arabidopsis (Arabidopsis thaliana). vha-a2 vha-a3 mutant plants displayed less Al sensitivity with less Al accumulation in roots compared to wild-type plants when grown under excessive Al3+ Interestingly, in response to Al3+ exposure, plants showed decreased vacuolar H+ pump activity and reduced expression of VHA-a2 and VHA-a3, which were accompanied by increased plasma membrane H+ pump (PM H+-ATPase) activity. Genetic analysis of plants with altered PM H+-ATPase activity established a correlation between Al-induced increase in PM H+-ATPase activity and enhanced Al resistance in vha-a2 vha-a3 plants. We determined that external OAs, such as malate and citrate whose secretion is driven by PM H+-ATPase, increased with PM H+-ATPase activity upon Al stress. On the other hand, elevated secretion of malate and citrate in vha-a2 vha-a3 root exudates appeared to be independent of OAs metabolism and tolerance of phosphate starvation but was likely related to impaired vacuolar sequestration. These results suggest that coordination of vacuolar H+-ATPase and PM H+-ATPase dictates the distribution of OAs into either the vacuolar lumen or the apoplastic space that, in turn, determines Al tolerance capacity in plants.
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Affiliation(s)
- Feng Zhang
- State Key Laboratory for Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210046, China
| | - Xiaoyi Yan
- State Key Laboratory for Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210046, China
| | - Xingbao Han
- State Key Laboratory for Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210046, China
| | - Renjie Tang
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720
| | - Moli Chu
- State Key Laboratory for Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210046, China
| | - Yang Yang
- State Key Laboratory for Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210046, China
| | - Yong-Hua Yang
- State Key Laboratory for Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210046, China
| | - Fugeng Zhao
- State Key Laboratory for Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210046, China
| | - Aigen Fu
- The Key Laboratory of Western Resources Biology and Biological Technology, College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720
| | - Wenzhi Lan
- State Key Laboratory for Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210046, China
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166
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Vigani G, Costa A. Harnessing the new emerging imaging technologies to uncover the role of Ca 2+ signalling in plant nutrient homeostasis. PLANT, CELL & ENVIRONMENT 2019; 42:2885-2901. [PMID: 31286524 DOI: 10.1111/pce.13611] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/03/2019] [Accepted: 07/05/2019] [Indexed: 05/26/2023]
Abstract
Increasing crop yields by using ecofriendly practices is of high priority to tackle problems regarding food security and malnutrition worldwide. A sustainable crop production requires a limited use of fertilizer and the employment of plant varieties with improved ability to acquire nutrients from soil. To reach these goals, the scientific community aims to understand plant nutrients homeostasis by deciphering the nutrient sensing and signalling mechanisms of plants. Several lines of evidence about the involvement of Ca2+ as the signal of an impaired nutrient availability have been reported. Ca2+ signalling is a tightly regulated process that requires specific protein toolkits to perceive external stimuli and to induce the specific responses in the plant needed to survive. Here, we summarize both older and recent findings concerning the involvement of Ca2+ signalling in the homeostasis of nutrients. In this review, we present new emerging technologies, based on the use of genetically encoded Ca2+ sensors and advanced microscopy, which offer the chance to perform in planta analyses of Ca2+ dynamics at cellular resolution. The harnessing of these technologies with different genetic backgrounds and subjected to different nutritional stresses will provide important insights to the still little-known mechanisms of nutrient sensing in plants.
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Affiliation(s)
- Gianpiero Vigani
- Department of Life Sciences and Systems Biology, University of Turin, Turin, 10135, Italy
| | - Alex Costa
- Department of Biosciences, University of Milan, Milan, 20133, Italy
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167
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López-Bucio JS, Salmerón-Barrera GJ, Ravelo-Ortega G, Raya-González J, León P, de la Cruz HR, Campos-García J, López-Bucio J, Guevara-García ÁA. Mitogen-activated protein kinase 6 integrates phosphate and iron responses for indeterminate root growth in Arabidopsis thaliana. PLANTA 2019; 250:1177-1189. [PMID: 31190117 DOI: 10.1007/s00425-019-03212-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 06/06/2019] [Indexed: 05/21/2023]
Abstract
A MAPK module, of which MPK6 kinase is an important component, is involved in the coordination of the responses to Pi and Fe in the primary root meristem of Arabidopsis thaliana. Phosphate (Pi) deficiency induces determinate primary root growth in Arabidopsis through cessation of cell division in the meristem, which is linked to an increased iron (Fe) accumulation. Here, we show that Mitogen-Activated Protein Kinase6 (MPK6) has a role in Arabidopsis primary root growth under low Pi stress. MPK6 activity is induced in roots in response to low Pi, and such induction is enhanced by Fe supplementation, suggesting an MPK6 role in coordinating Pi/Fe balance in mediating root growth. The differentiation of the root meristem induced by low Pi levels correlates with altered expression of auxin-inducible genes and auxin transporter levels via MPK6. Our results indicate a critical role of the MPK6 kinase in coordinating meristem cell activity to Pi and Fe availability for proper primary root growth.
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Affiliation(s)
- Jesús Salvador López-Bucio
- CONACYT-Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico.
| | | | - Gustavo Ravelo-Ortega
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
| | - Javier Raya-González
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
| | - Patricia León
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, CP 62250, Cuernavaca, Morelos, Mexico
| | - Homero Reyes de la Cruz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
| | - José López-Bucio
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
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168
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Sadhukhan A, Enomoto T, Kobayashi Y, Watanabe T, Iuchi S, Kobayashi M, Sahoo L, Yamamoto YY, Koyama H. Sensitive to Proton Rhizotoxicity1 Regulates Salt and Drought Tolerance of Arabidopsis thaliana through Transcriptional Regulation of CIPK23. PLANT & CELL PHYSIOLOGY 2019; 60:2113-2126. [PMID: 31241160 DOI: 10.1093/pcp/pcz120] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 06/11/2019] [Indexed: 05/10/2023]
Abstract
The transcription factor sensitive to proton rhizotoxicity 1 (STOP1) regulates multiple stress tolerances. In this study, we confirmed its involvement in NaCl and drought tolerance. The root growth of the T-DNA insertion mutant of STOP1 (stop1) was sensitive to NaCl-containing solidified MS media. Transcriptome analysis of stop1 under NaCl stress revealed that STOP1 regulates several genes related to salt tolerance, including CIPK23. Among all available homozygous T-DNA insertion mutants of the genes suppressed in stop1, only cipk23 showed a NaCl-sensitive root growth phenotype comparable to stop1. The CIPK23 promoter had a functional STOP1-binding site, suggesting a strong CIPK23 suppression led to NaCl sensitivity of stop1. This possibility was supported by in planta complementation of CIPK23 in the stop1 background, which rescued the short root phenotype under NaCl. Both stop1 and cipk23 exhibited a drought tolerant phenotype and increased abscisic acid-regulated stomatal closure, while the complementation of CIPK23 in stop1 reversed these traits. Our findings uncover additional pleiotropic roles of STOP1 mediated by CIPK23, which regulates various ion transporters including those regulating K+-homeostasis, which may induce a trade-off between drought tolerance and other traits.
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Affiliation(s)
- Ayan Sadhukhan
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
| | - Takuo Enomoto
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
| | - Yuriko Kobayashi
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
| | - Toshihiro Watanabe
- Research Faculty of Agriculture, Hokkaido University, Kita-9, Nishi-9, Kitaku, Sapporo, Japan
| | - Satoshi Iuchi
- Experimental Plant Division, RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Masatomo Kobayashi
- Experimental Plant Division, RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Lingaraj Sahoo
- Department of Biosciences and bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Yoshiharu Y Yamamoto
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
| | - Hiroyuki Koyama
- Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Japan
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169
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Godon C, Mercier C, Wang X, David P, Richaud P, Nussaume L, Liu D, Desnos T. Under phosphate starvation conditions, Fe and Al trigger accumulation of the transcription factor STOP1 in the nucleus of Arabidopsis root cells. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 99:937-949. [PMID: 31034704 PMCID: PMC6852189 DOI: 10.1111/tpj.14374] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 04/07/2019] [Accepted: 04/24/2019] [Indexed: 05/20/2023]
Abstract
Low-phosphate (Pi) conditions are known to repress primary root growth of Arabidopsis at low pH and in an Fe-dependent manner. This growth arrest requires accumulation of the transcription factor STOP1 in the nucleus, where it activates the transcription of the malate transporter gene ALMT1; exuded malate is suspected to interact with extracellular Fe to inhibit root growth. In addition, ALS3 - an ABC-like transporter identified for its role in tolerance to toxic Al - represses nuclear accumulation of STOP1 and the expression of ALMT1. Until now it was unclear whether Pi deficiency itself or Fe activates the accumulation of STOP1 in the nucleus. Here, by using different growth media to dissociate the effects of Fe from Pi deficiency itself, we demonstrate that Fe is sufficient to trigger the accumulation of STOP1 in the nucleus, which, in turn, activates the expression of ALMT1. We also show that a low pH is necessary to stimulate the Fe-dependent accumulation of nuclear STOP1. Furthermore, pharmacological experiments indicate that Fe inhibits proteasomal degradation of STOP1. We also show that Al acts like Fe for nuclear accumulation of STOP1 and ALMT1 expression, and that the overaccumulation of STOP1 in the nucleus of the als3 mutant grown in low-Pi conditions could be abolished by Fe deficiency. Altogether, our results indicate that, under low-Pi conditions, Fe2/3+ and Al3+ act similarly to increase the stability of STOP1 and its accumulation in the nucleus where it activates the expression of ALMT1.
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Affiliation(s)
- Christian Godon
- Laboratoire de Biologie du Développement des Plantes, Commissariat à l'Énergie Atomique et aux Énergies AlternativesUMR7265 (CEA, Aix‐Marseille Université, CNRS)Saint Paul‐Lez‐DuranceF‐13108France
| | - Caroline Mercier
- Laboratoire de Biologie du Développement des Plantes, Commissariat à l'Énergie Atomique et aux Énergies AlternativesUMR7265 (CEA, Aix‐Marseille Université, CNRS)Saint Paul‐Lez‐DuranceF‐13108France
| | - Xiaoyue Wang
- Ministry of Education Key Laboratory of BioinformaticsCenter for Plant BiologySchool of Life SciencesTsinghua UniversityBeijing100084China
| | - Pascale David
- Laboratoire de Biologie du Développement des Plantes, Commissariat à l'Énergie Atomique et aux Énergies AlternativesUMR7265 (CEA, Aix‐Marseille Université, CNRS)Saint Paul‐Lez‐DuranceF‐13108France
| | - Pierre Richaud
- Laboratoire de Bioénergétique et Biotechnologie des Bactéries et MicroalguesCommissariat à l'Énergie Atomique et aux Énergies AlternativesUMR7265 (CEA, Aix‐Marseille Université, CNRS)Saint Paul‐Lez‐DuranceF‐13108France
| | - Laurent Nussaume
- Laboratoire de Biologie du Développement des Plantes, Commissariat à l'Énergie Atomique et aux Énergies AlternativesUMR7265 (CEA, Aix‐Marseille Université, CNRS)Saint Paul‐Lez‐DuranceF‐13108France
| | - Dong Liu
- Ministry of Education Key Laboratory of BioinformaticsCenter for Plant BiologySchool of Life SciencesTsinghua UniversityBeijing100084China
| | - Thierry Desnos
- Laboratoire de Biologie du Développement des Plantes, Commissariat à l'Énergie Atomique et aux Énergies AlternativesUMR7265 (CEA, Aix‐Marseille Université, CNRS)Saint Paul‐Lez‐DuranceF‐13108France
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170
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Crombez H, Motte H, Beeckman T. Tackling Plant Phosphate Starvation by the Roots. Dev Cell 2019; 48:599-615. [PMID: 30861374 DOI: 10.1016/j.devcel.2019.01.002] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 10/16/2018] [Accepted: 12/31/2018] [Indexed: 12/17/2022]
Abstract
Plant responses to phosphate deprivation encompass a wide range of strategies, varying from altering root system architecture, entering symbiotic interactions to excreting root exudates for phosphorous release, and recycling of internal phosphate. These processes are tightly controlled by a complex network of proteins that are specifically upregulated upon phosphate starvation. Although the different effects of phosphate starvation have been intensely studied, the full extent of its contribution to altered root system architecture remains unclear. In this review, we focus on the effect of phosphate starvation on the developmental processes that shape the plant root system and their underlying molecular pathways.
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Affiliation(s)
- Hanne Crombez
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent 9052, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, Ghent 9052, Belgium
| | - Hans Motte
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent 9052, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, Ghent 9052, Belgium
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent 9052, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, Ghent 9052, Belgium.
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171
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Ueda Y, Yanagisawa S. Perception, transduction, and integration of nitrogen and phosphorus nutritional signals in the transcriptional regulatory network in plants. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:3709-3717. [PMID: 30949701 DOI: 10.1093/jxb/erz148] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 03/19/2019] [Indexed: 05/20/2023]
Abstract
Nitrate and phosphate ions are major sources of nitrogen and phosphorus for plants. In addition to their vital roles as indispensable macronutrients, these ions function as signalling molecules and induce a variety of responses. Plants adapt to different levels of nutrients by altering their gene expression profile and subsequent physiological and morphological responses. Advances made in recent years have provided novel insights into plant nutrient sensing and modulation of gene expression. Key breakthroughs include elucidation of the mechanisms underlying post-translational regulation of NIN-LIKE PROTEIN (NLP) and PHOSPHATE STARVATION RESPONSE (PHR) family transcription factors, which function as master regulators of responses to nitrate and phosphate starvation, respectively. Determination of the mechanisms whereby these nutrient signals are integrated through NIGT1/HHO family proteins has likewise represented important progress. Further studies have revealed novel roles in nutrient signalling of transcription factors that have previously been shown to be associated with other signals, such as light and phytohormones. Nitrate and phosphate signals are thus transmitted through an intricate gene regulatory network with the help of various positive and negative transcriptional regulators. These complex regulatory patterns enable plants to integrate input signals from various environmental factors and trigger appropriate responses, as exemplified by the regulatory module involving NIGT1/HHO family proteins. These mechanisms collectively support nutrient homeostasis in plants.
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Affiliation(s)
- Yoshiaki Ueda
- Biotechnology Research Center, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo
| | - Shuichi Yanagisawa
- Biotechnology Research Center, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo
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172
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Herzig P, Backhaus A, Seiffert U, von Wirén N, Pillen K, Maurer A. Genetic dissection of grain elements predicted by hyperspectral imaging associated with yield-related traits in a wild barley NAM population. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 285:151-164. [PMID: 31203880 DOI: 10.1016/j.plantsci.2019.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/08/2019] [Accepted: 05/10/2019] [Indexed: 05/05/2023]
Abstract
Enhancing the accumulation of essential mineral elements in cereal grains is of prime importance for combating human malnutrition. Biofortification by breeding holds great potential for improving nutrient accumulation in grains. However, conventional breeding approaches require element analysis of many grain samples, which causes high costs. Here we applied hyperspectral imaging to estimate the concentration of 15 grain elements (C, B, Ca, Cd, Cu, Fe, K, Mg, Mn, Mo, N, Na, P, S, Zn) in high-throughput in the wild barley nested association mapping (NAM) population HEB-25, comprising 1,420 BC1S3 lines derived from crossing 25 wild barley accessions with the cultivar 'Barke'. Nutrient concentrations varied largely with a multitude of lines having higher micronutrient concentration than 'Barke'. In a genome-wide association study (GWAS), we located 75 quantitative trait locus (QTL) hotspots, whereof many could be explained by major genes such as NO APICAL MERISTEM-1 (NAM-1) and PHOTOPERIOD 1 (Ppd-H1). The GWAS approach revealed exotic alleles that were able to increase grain element concentrations. Remarkably, a QTL linked to GIBBERELLIN 20 OXIDASE 2 (HvGA20ox2) significantly increased several grain elements without yield loss. We conclude that introgressing promising exotic alleles into elite breeding material can assist in improving the nutritional value of barley grains.
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Affiliation(s)
- Paul Herzig
- Martin Luther University Halle-Wittenberg, Institute of Agricultural and Nutritional Sciences, Chair of Plant Breeding, Betty-Heimann-Str. 3, 06120 Halle, Germany
| | - Andreas Backhaus
- Fraunhofer Institute for Factory Operation and Automation (IFF), Sandtorstraße 22, 39106 Magdeburg, Germany
| | - Udo Seiffert
- Fraunhofer Institute for Factory Operation and Automation (IFF), Sandtorstraße 22, 39106 Magdeburg, Germany
| | - Nicolaus von Wirén
- Molecular Plant Nutrition, Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, 06466 Stadt Seeland, OT Gatersleben, Germany
| | - Klaus Pillen
- Martin Luther University Halle-Wittenberg, Institute of Agricultural and Nutritional Sciences, Chair of Plant Breeding, Betty-Heimann-Str. 3, 06120 Halle, Germany
| | - Andreas Maurer
- Martin Luther University Halle-Wittenberg, Institute of Agricultural and Nutritional Sciences, Chair of Plant Breeding, Betty-Heimann-Str. 3, 06120 Halle, Germany.
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173
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Matthus E, Wilkins KA, Davies JM. Iron availability modulates the Arabidopsis thaliana root calcium signature evoked by exogenous ATP. PLANT SIGNALING & BEHAVIOR 2019; 14:1640563. [PMID: 31304865 PMCID: PMC6768249 DOI: 10.1080/15592324.2019.1640563] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 06/27/2019] [Indexed: 06/01/2023]
Abstract
Plants use changes in cytosolic free Ca2+ ("signatures") to encode information from the specific signals generated in development, immunity and stress perception. Phosphate availability has a significant impact on the Arabidopsis thaliana root calcium signatures generated in response to abiotic stress stimuli and exogenous purine nucleotides. In the case of the response to exogenous ATP, the effect of low phosphate availability is linked to abnormal iron and reactive oxygen species accumulation with iron deprivation's restoring normal signature dynamics. Here, the effect of iron deprivation with normal phosphate availability has been examined. Iron deprivation significantly alters the root calcium signature evoked by exogenous ATP and may link to levels of reactive oxygen species and callose deposition.
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Affiliation(s)
- Elsa Matthus
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Katie A. Wilkins
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Julia M. Davies
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
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174
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Enomoto T, Tokizawa M, Ito H, Iuchi S, Kobayashi M, Yamamoto YY, Kobayashi Y, Koyama H. STOP1 regulates the expression of HsfA2 and GDHs that are critical for low-oxygen tolerance in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:3297-3311. [PMID: 30882866 DOI: 10.1093/jxb/erz124] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 03/07/2019] [Indexed: 05/03/2023]
Abstract
The SENSITIVE TO PROTON RHIZOTOXICITY 1 (STOP1) transcription factor regulates gene expression associated with multiple stress tolerances in plant roots. In this study, we investigated the mechanism responsible for the sensitivity of the stop1 mutant to low-oxygen stress in Arabidopsis. Transcriptomic analyses revealed that two genes involved in low-oxygen tolerance, namely GLUTAMATE DEHYDROGENASE 1 (GDH1) and GDH2, showed lower expression levels in the stop1 mutant than in the wild-type. Sensitivity of the gdh1gdh2 double-mutant to low-oxygen conditions was partly attributable to the low-oxygen sensitivity of the stop1 mutant. Two transcription factors, STOP2 and HEAT SHOCK FACTOR A2 (HsfA2), were expressed at lower levels in the stop1 mutant. An in planta complementation assay indicated that CaMV35S::STOP2 or CaMV35S::HsfA2 partially rescued the low-oxygen tolerance of the stop1 mutant, which was concomitant with recovered expression of genes regulating low-pH tolerance and genes encoding molecular chaperones. Prediction of cis-elements and in planta promoter assays revealed that STOP1 directly activated the expression of HsfA2. Similar STOP1-dependent low-oxygen sensitivity was detected in tobacco. Suppression of NtSTOP1 induced low-oxygen sensitivity, which was associated with lower expression levels of NtHsfA2 and NtGDHs compared with the wild-type. Our results indicated that STOP1 pleiotropically regulates low-oxygen tolerance by transcriptional regulation.
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Affiliation(s)
- Takuo Enomoto
- Applied Biological Sciences, Gifu University, Gifu, Japan
| | | | - Hiroki Ito
- Applied Biological Sciences, Gifu University, Gifu, Japan
| | | | | | - Yoshiharu Y Yamamoto
- Applied Biological Sciences, Gifu University, Gifu, Japan
- RIKEN CSRS, Kanagawa, Japan
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175
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Wu L, Sadhukhan A, Kobayashi Y, Ogo N, Tokizawa M, Agrahari RK, Ito H, Iuchi S, Kobayashi M, Asai A, Koyama H. Involvement of phosphatidylinositol metabolism in aluminum-induced malate secretion in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:3329-3342. [PMID: 30977815 DOI: 10.1093/jxb/erz179] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 04/03/2019] [Indexed: 05/27/2023]
Abstract
To identify the upstream signaling of aluminum-induced malate secretion through aluminum-activated malate transporter 1 (AtALMT1), a pharmacological assay using inhibitors of human signal transduction pathways was performed. Early aluminum-induced transcription of AtALMT1 and other aluminum-responsive genes was significantly suppressed by phosphatidylinositol 4-kinase (PI4K) and phospholipase C (PLC) inhibitors, indicating that the PI4K-PLC metabolic pathway activates early aluminum signaling. Inhibitors of phosphatidylinositol 3-kinase (PI3K) and PI4K reduced aluminum-activated malate transport by AtALMT1, suggesting that both the PI3K and PI4K metabolic pathways regulate this process. These results were validated using T-DNA insertion mutants of PI4K and PI3K-RNAi lines. A human protein kinase inhibitor, putatively inhibiting homologous calcineurin B-like protein-interacting protein kinase and/or Ca-dependent protein kinase in Arabidopsis, suppressed late-phase aluminum-induced expression of AtALMT1, which was concomitant with the induction of an AtALMT1 repressor, WRKY46, and suppression of an AtALMT1 activator, Calmodulin-binding transcription activator 2 (CAMTA2). In addition, a human deubiquitinase inhibitor suppressed aluminum-activated malate transport, suggesting that deubiquitinases can regulate this process. We also found a reduction of aluminum-induced citrate secretion in tobacco by applying inhibitors of PI3K and PI4K. Taken together, our results indicated that phosphatidylinositol metabolism regulates organic acid secretion in plants under aluminum stress.
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Affiliation(s)
- Liujie Wu
- Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Ayan Sadhukhan
- Applied Biological Sciences, Gifu University, Gifu, Japan
| | | | - Naohisa Ogo
- Graduate Division of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | | | | | - Hiroki Ito
- Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Satoshi Iuchi
- Experimental Plant Division, RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Masatomo Kobayashi
- Experimental Plant Division, RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Akira Asai
- Graduate Division of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
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176
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Ali S, Baloch AM. Overview of Sustainable Plant Growth and Differentiation and the Role of Hormones in Controlling Growth and Development of Plants Under Various Stresses. Recent Pat Food Nutr Agric 2019; 11:105-114. [PMID: 31215383 DOI: 10.2174/2212798410666190619104712] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/18/2018] [Accepted: 11/19/2018] [Indexed: 12/15/2022]
Abstract
Plant development is different from animals by many fundamental aspects; as they have immobilized cells, a rigid cell wall, and the large central vacuole. Plant growth and cell division are restricted to the specific area of the shoot and root called meristems. Plants have the ability to carry out differentiation, dedifferentiation and redifferentiation. In plants, the growth and differentiation processes are controlled by hormonal and genetic factors. Phytohormones can exert independent/ dependent actions on plant growth and development. A pool of stem cells is placed at the niche of the apex meristem, which is the source of self-renewal of the cell system and its maintenance to provide cells to differentiated tissues. A complex interaction network between hormones and other factors maintains a balance between cell division and differentiation. Auxins promote the growth, gibberellins' function in seed germination, cytokinin's influence on cell division and delay leaf senescence; abscisic acid promotes the stomatal closure and bud dormancy, while salicylic acid promotes resistance against different diseases. Plants are often exposed to different abiotic and biotic stresses, for example, heat, cold, drought, salinity etc., whereas biotic stress arises mainly from fungi, bacteria, insect, etc. Phytohormones play a critical role in well-developed mechanisms that help to perceive the stress signal and enable the plant's optimal growth response. In this review, we studied both the intrinsic and extrinsic factors which govern growth and differentiation of plants under normal and stress condition. This review also deals with genetic modifications occurring in the cell and cell signaling during growth and differentiation.
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Affiliation(s)
- Shahid Ali
- College of Life Science, Northeast Forestry University, Harbin, Heilongjiang 150040, China
| | - Abdul Majeed Baloch
- Department of Horticulture, Sindh Agriculture University Hyderabad, Pakistan
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177
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Bouain N, Krouk G, Lacombe B, Rouached H. Getting to the Root of Plant Mineral Nutrition: Combinatorial Nutrient Stresses Reveal Emergent Properties. TRENDS IN PLANT SCIENCE 2019; 24:542-552. [PMID: 31006547 DOI: 10.1016/j.tplants.2019.03.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 03/19/2019] [Accepted: 03/21/2019] [Indexed: 05/02/2023]
Abstract
In nature, plants have to handle daily fluctuations in light and temperature. In addition, plants face biotic and abiotic stresses that often come in various combinations. For instance, the availability of various nutrients in soil is heterogeneous, resulting in combined nutrient stress. Recent studies reveal that plant responses to multiple nutrient stresses are not the summation of the plant responses to each individual stress. Here, we present and discuss the interactions between phosphate, nitrogen, and zinc to illustrate the effect of macro- and micronutrient interactions on plant growth and ion homeostasis. Solving the mystery of these interactions will pave the way to the development of strategies to improve crop productivity.
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Affiliation(s)
- Nadia Bouain
- BPMP, Univ Montpellier, INRA, CNRS, SupAgro, Montpellier, France
| | - Gabriel Krouk
- BPMP, Univ Montpellier, INRA, CNRS, SupAgro, Montpellier, France
| | - Benoit Lacombe
- BPMP, Univ Montpellier, INRA, CNRS, SupAgro, Montpellier, France
| | - Hatem Rouached
- BPMP, Univ Montpellier, INRA, CNRS, SupAgro, Montpellier, France.
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178
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Motte H, Vanneste S, Beeckman T. Molecular and Environmental Regulation of Root Development. ANNUAL REVIEW OF PLANT BIOLOGY 2019; 70:465-488. [PMID: 30822115 DOI: 10.1146/annurev-arplant-050718-100423] [Citation(s) in RCA: 162] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
In order to optimally establish their root systems, plants are endowed with several mechanisms to use at distinct steps during their development. In this review, we zoom in on the major processes involved in root development and detail important new insights that have been generated in recent studies, mainly using the Arabidopsis root as a model. First, we discuss new insights in primary root development with the characterization of tissue-specific transcription factor complexes and the identification of non-cell-autonomous control mechanisms in the root apical meristem. Next, root branching is discussed by focusing on the earliest steps in the development of a new lateral root and control of its postemergence growth. Finally, we discuss the impact of phosphate, nitrogen, and water availability on root development and summarize current knowledge about the major molecular mechanisms involved.
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Affiliation(s)
- Hans Motte
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium;
| | - Steffen Vanneste
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium;
- Lab of Plant Growth Analysis, Ghent University Global Campus, Incheon 21985, Republic of Korea
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium;
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179
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Matthus E, Wilkins KA, Swarbreck SM, Doddrell NH, Doccula FG, Costa A, Davies JM. Phosphate Starvation Alters Abiotic-Stress-Induced Cytosolic Free Calcium Increases in Roots. PLANT PHYSIOLOGY 2019; 179:1754-1767. [PMID: 30696750 PMCID: PMC6446763 DOI: 10.1104/pp.18.01469] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 01/17/2019] [Indexed: 05/08/2023]
Abstract
Phosphate (Pi) deficiency strongly limits plant growth, and plant roots foraging the soil for nutrients need to adapt to optimize Pi uptake. Ca2+ is known to signal in root development and adaptation but has to be tightly controlled, as it is highly toxic to Pi metabolism. Under Pi starvation and the resulting decreased cellular Pi pool, the use of cytosolic free Ca2+ ([Ca2+]cyt) as a signal transducer may therefore have to be altered. Employing aequorin-expressing Arabidopsis (Arabidopsis thaliana), we show that Pi starvation, but not nitrogen starvation, strongly dampens the [Ca2+]cyt increases evoked by mechanical, salt, osmotic, and oxidative stress as well as by extracellular nucleotides. The altered root [Ca2+]cyt response to extracellular ATP manifests during seedling development under chronic Pi deprivation but can be reversed by Pi resupply. Employing ratiometric imaging, we delineate that Pi-starved roots have a normal response to extracellular ATP at the apex but show a strongly dampened [Ca2+]cyt response in distal parts of the root tip, correlating with high reactive oxygen species levels induced by Pi starvation. Excluding iron, as well as Pi, rescues this altered [Ca2+]cyt response and restores reactive oxygen species levels to those seen under nutrient-replete conditions. These results indicate that, while Pi availability does not seem to be signaled through [Ca2+]cyt, Pi starvation strongly affects stress-induced [Ca2+]cyt signatures. These data reveal how plants can integrate nutritional and environmental cues, adding another layer of complexity to the use of Ca2+ as a signal transducer.
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Affiliation(s)
- Elsa Matthus
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, United Kingdom
| | - Katie A Wilkins
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, United Kingdom
| | - Stéphanie M Swarbreck
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, United Kingdom
| | - Nicholas H Doddrell
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, United Kingdom
| | | | - Alex Costa
- Department of Biosciences, University of Milan, 20133 Milan, Italy
- Institute of Biophysics, Consiglio Nazionale delle Ricerche, 20133 Milan, Italy
| | - Julia M Davies
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, United Kingdom
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180
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Bernardino KC, Pastina MM, Menezes CB, de Sousa SM, Maciel LS, Jr GC, Guimarães CT, Barros BA, da Costa e Silva L, Carneiro PCS, Schaffert RE, Kochian LV, Magalhaes JV. The genetic architecture of phosphorus efficiency in sorghum involves pleiotropic QTL for root morphology and grain yield under low phosphorus availability in the soil. BMC PLANT BIOLOGY 2019; 19:87. [PMID: 30819116 PMCID: PMC6394046 DOI: 10.1186/s12870-019-1689-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/19/2019] [Indexed: 05/18/2023]
Abstract
BACKGROUND Phosphorus (P) fixation on aluminum (Al) and iron (Fe) oxides in soil clays restricts P availability for crops cultivated on highly weathered tropical soils, which are common in developing countries. Hence, P deficiency becomes a major obstacle for global food security. We used multi-trait quantitative trait loci (QTL) mapping to study the genetic architecture of P efficiency and to explore the importance of root traits on sorghum grain yield on a tropical low-P soil. RESULTS P acquisition efficiency was the most important component of P efficiency, and both traits were highly correlated with grain yield under low P availability. Root surface area was positively associated with grain yield. The guinea parent, SC283, contributed 58% of all favorable alleles detected by single-trait mapping. Multi-trait mapping detected 14 grain yield and/or root morphology QTLs. Tightly linked or pleiotropic QTL underlying the surface area of fine roots (1-2 mm in diameter) and grain yield were detected at positions 1-7 megabase pairs (Mb) and 71 Mb on chromosome 3, respectively, and a root diameter/grain yield QTL was detected at 7 Mb on chromosome 7. All these QTLs were near sorghum homologs of the rice serine/threonine kinase, OsPSTOL1. The SbPSTOL1 genes on chromosome 3, Sb03g006765 at 7 Mb and Sb03g031690 at 60 Mb were more highly expressed in SC283, which donated the favorable alleles at all QTLs found nearby SbPSTOL1 genes. The Al tolerance gene, SbMATE, may also influence a grain yield QTL on chromosome 3. Another PSTOL1-like gene, Sb07g02840, appears to enhance grain yield via small increases in root diameter. Co-localization analyses suggested a role for other genes, such as a sorghum homolog of the Arabidopsis ubiquitin-conjugating E2 enzyme, phosphate 2 (PHO2), on grain yield advantage conferred by the elite parent, BR007 allele. CONCLUSIONS Genetic determinants conferring higher root surface area and slight increases in fine root diameter may favor P uptake, thereby enhancing grain yield under low-P availability in the soil. Molecular markers for SbPSTOL1 genes and for QTL increasing grain yield by non-root morphology-based mechanisms hold promise in breeding strategies aimed at developing sorghum cultivars adapted to low-P soils.
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Affiliation(s)
- Karine C. Bernardino
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
- Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Viçosa, MG 36570-900 Brazil
| | - Maria Marta Pastina
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
| | - Cícero B. Menezes
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
| | - Sylvia M. de Sousa
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
| | - Laiane S. Maciel
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos, 6627, Belo Horizonte, MG 31270-901 Brazil
| | - Geraldo Carvalho Jr
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
- Present Address: Helix Sementes, Rua Arnaldo Luiz de Oliveira, 75, Setor D, Bela Vista, Patos de Minas, MG 38703-240 Brazil
| | - Claudia T. Guimarães
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
| | - Beatriz A. Barros
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
| | - Luciano da Costa e Silva
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
| | - Pedro C. S. Carneiro
- Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Viçosa, MG 36570-900 Brazil
| | - Robert E. Schaffert
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
| | - Leon V. Kochian
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, SK S7N 4J8 Canada
| | - Jurandir V. Magalhaes
- Embrapa Milho e Sorgo, Rodovia MG 424, km 65, Caixa Postal 151, Sete Lagoas, MG 35701-970 Brazil
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos, 6627, Belo Horizonte, MG 31270-901 Brazil
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Li G, Zhang L, Wang M, Di D, Kronzucker HJ, Shi W. The Arabidopsis AMOT1/EIN3 gene plays an important role in the amelioration of ammonium toxicity. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:1375-1388. [PMID: 30689938 PMCID: PMC6382331 DOI: 10.1093/jxb/ery457] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 12/19/2018] [Indexed: 05/13/2023]
Abstract
Ammonium (NH4+) toxicity inhibits shoot growth in Arabidopsis, but the underlying mechanisms remain poorly characterized. Here, we show that a novel Arabidopsis mutant, ammonium tolerance 1 (amot1), exhibits enhanced shoot growth tolerance to NH4+. Molecular cloning revealed that amot1 is a new allele of EIN3, a key regulator of ethylene responses. The amot1 mutant and the allelic ein3-1 mutants show greater NH4+ tolerance than the wild type. Moreover, transgenic plants overexpressing EIN3 (EIN3ox) are more sensitive to NH4+ toxicity The ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) increases shoot sensitivity to NH4+, whereas the ethylene perception inhibitor Ag+ decreases sensitivity. NH4+ induces ACC and ethylene accumulation. Furthermore, ethylene-insensitive mutants such as etr1-3 and ein3eil1 display enhanced NH4+ tolerance. In contrast, the ethylene overproduction mutant eto1-1 exhibits decreased ammonium tolerance. AMOT1/EIN3 positively regulates shoot ROS accumulation, leading to oxidative stress under NH4+ stress, a trait that may be related to increased expression of peroxidase-encoding genes. These findings demonstrate the role of AMOT1/EIN3 in NH4+ tolerance and confirm the strong link between NH4+ toxicity symptoms and the accumulation of hydrogen peroxide.
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Affiliation(s)
- Guangjie Li
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- Correspondence: or
| | - Lin Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of the Chinese Academy of Sciences, Beijing, China
| | - Meng Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Dongwei Di
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Herbert J Kronzucker
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, Australia
| | - Weiming Shi
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- Correspondence: or
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182
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Barrada A, Djendli M, Desnos T, Mercier R, Robaglia C, Montané MH, Menand B. A TOR-YAK1 signaling axis controls cell cycle, meristem activity and plant growth in Arabidopsis. Development 2019; 146:dev.171298. [PMID: 30705074 DOI: 10.1242/dev.171298] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 01/14/2019] [Indexed: 01/20/2023]
Abstract
TARGET OF RAPAMYCIN (TOR) is a conserved eukaryotic phosphatidylinositol-3-kinase-related kinase that plays a major role in regulating growth and metabolism in response to environment in plants. We performed a genetic screen for Arabidopsis ethylmethane sulfonate mutants resistant to the ATP-competitive TOR inhibitor AZD-8055 to identify new components of the plant TOR pathway. We found that loss-of-function mutants of the DYRK (dual specificity tyrosine phosphorylation regulated kinase)/YAK1 kinase are resistant to AZD-8055 and, reciprocally, that YAK1 overexpressors are hypersensitive to AZD-8055. Significantly, these phenotypes were conditional on TOR inhibition, positioning YAK1 activity downstream of TOR. We further show that the ATP-competitive DYRK1A inhibitor pINDY phenocopies YAK1 loss of function. Microscopy analysis revealed that YAK1 functions to repress meristem size and induce differentiation. We show that YAK1 represses cyclin expression in the different zones of the root meristem and that YAK1 is essential for TOR-dependent transcriptional regulation of the plant-specific SIAMESE-RELATED (SMR) cyclin-dependent kinase inhibitors in both meristematic and differentiating root cells. Thus, YAK1 is a major regulator of meristem activity and cell differentiation downstream of TOR.
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Affiliation(s)
- Adam Barrada
- Aix Marseille Université, CEA, CNRS, BIAM, Laboratoire de Génétique et Biophysique des Plantes, Marseille, France F-13009
| | - Meriem Djendli
- Aix Marseille Université, CEA, CNRS, BIAM, Laboratoire de Génétique et Biophysique des Plantes, Marseille, France F-13009
| | - Thierry Desnos
- Aix Marseille Univ, CEA, CNRS, BIAM, Laboratoire de Biologie du Développement des Plantes, Saint Paul-Lez-Durance, France F-13108
| | - Raphael Mercier
- Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | - Christophe Robaglia
- Aix Marseille Université, CEA, CNRS, BIAM, Laboratoire de Génétique et Biophysique des Plantes, Marseille, France F-13009
| | - Marie-Hélène Montané
- Aix Marseille Université, CEA, CNRS, BIAM, Laboratoire de Génétique et Biophysique des Plantes, Marseille, France F-13009
| | - Benoît Menand
- Aix Marseille Université, CEA, CNRS, BIAM, Laboratoire de Génétique et Biophysique des Plantes, Marseille, France F-13009
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183
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Naumann C, Müller J, Sakhonwasee S, Wieghaus A, Hause G, Heisters M, Bürstenbinder K, Abel S. The Local Phosphate Deficiency Response Activates Endoplasmic Reticulum Stress-Dependent Autophagy. PLANT PHYSIOLOGY 2019; 179:460-476. [PMID: 30510038 PMCID: PMC6426416 DOI: 10.1104/pp.18.01379] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 11/28/2018] [Indexed: 05/08/2023]
Abstract
Inorganic phosphate (Pi) is often a limiting plant nutrient. In members of the Brassicaceae family, such as Arabidopsis (Arabidopsis thaliana), Pi deprivation reshapes root system architecture to favor topsoil foraging. It does so by inhibiting primary root extension and stimulating lateral root formation. Root growth inhibition from phosphate (Pi) deficiency is triggered by iron-stimulated, apoplastic reactive oxygen species generation and cell wall modifications, which impair cell-to-cell communication and meristem maintenance. These processes require LOW PHOSPHATE RESPONSE1 (LPR1), a cell wall-targeted ferroxidase, and PHOSPHATE DEFICIENCY RESPONSE2 (PDR2), the single endoplasmic reticulum (ER)-resident P5-type ATPase (AtP5A), which is thought to control LPR1 secretion or activity. Autophagy is a conserved process involving the vacuolar degradation of cellular components. While the function of autophagy is well established under nutrient starvation (C, N, or S), it remains to be explored under Pi deprivation. Because AtP5A/PDR2 likely functions in the ER stress response, we analyzed the effect of Pi limitation on autophagy. Our comparative study of mutants defective in the local Pi deficiency response, ER stress response, and autophagy demonstrated that ER stress-dependent autophagy is rapidly activated as part of the developmental root response to Pi limitation and requires the genetic PDR2-LPR1 module. We conclude that Pi-dependent activation of autophagy in the root apex is a consequence of local Pi sensing and the associated ER stress response, rather than a means for systemic recycling of the macronutrient.
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Affiliation(s)
- Christin Naumann
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Jens Müller
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Siriwat Sakhonwasee
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Annika Wieghaus
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Gerd Hause
- Biocenter, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Marcus Heisters
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Katharina Bürstenbinder
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Steffen Abel
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
- Institute of Biochemistry and Biotechnology, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
- Department of Plant Sciences, University of California, Davis, California 95616
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184
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Wang X, Wang Z, Zheng Z, Dong J, Song L, Sui L, Nussaume L, Desnos T, Liu D. Genetic Dissection of Fe-Dependent Signaling in Root Developmental Responses to Phosphate Deficiency. PLANT PHYSIOLOGY 2019; 179:300-316. [PMID: 30420567 PMCID: PMC6324241 DOI: 10.1104/pp.18.00907] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/31/2018] [Indexed: 05/13/2023]
Abstract
The inhibition of primary root (PR) growth is a major developmental response of Arabidopsis (Arabidopsis thaliana) to phosphate (Pi) deficiency. Previous studies have independently uncovered key roles of the LOW PHOSPHATE RESPONSE1 (LPR1) ferroxidase, the tonoplast-localized ALUMINUM SENSITIVE3 (ALS3)/SENSITIVE TO ALUMINUM RHIZOTOXICITY1 (STAR1) transporter complex, and the SENSITIVE TO PROTON RHIZOTOXICITY1 (STOP1; a transcription factor)-ALUMINUM-ACTIVATED MALATE TRANSPORTER1 (ALMT1; a malate transporter) regulatory module in mediating this response by controlling iron (Fe) homeostasis in roots, but how these three components interact to regulate PR growth under Pi deficiency remains unknown. Here, we dissected genetic relationships among these three key components and found that (1) STOP1, ALMT1, and LPR1 act downstream of ALS3/STAR1 in controlling PR growth under Pi deficiency; (2) ALS3/STAR1 inhibits the STOP1-ALMT1 pathway by repressing STOP1 protein accumulation in the nucleus; and (3) STOP1-ALMT1 and LPR1 control PR growth under Pi deficiency in an interdependent manner involving the promotion of malate-dependent Fe accumulation in roots. Furthermore, this malate-mediated Fe accumulation depends on external Pi availability. We also performed a detailed analysis of the dynamic changes in the tissue-specific Fe accumulation patterns in the root tips of plants exposed to Pi deficiency. The results indicate that the degree of inhibition of PR growth induced by Pi deficiency is not linked to the level of Fe accumulated in the root apical meristem or the elongation zone. Our work provides insights into the molecular mechanism that regulates the root developmental response to Pi deficiency.
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Affiliation(s)
- Xiaoyue Wang
- Ministry of Education Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Zhen Wang
- Ministry of Education Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Zai Zheng
- Ministry of Education Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jinsong Dong
- Ministry of Education Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Li Song
- Ministry of Education Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Liqian Sui
- Ministry of Education Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Laurent Nussaume
- Laboratoire de Biologie du Développement des Plantes, Institut de Biosciences et Biotechnology Aix-Marseille, Commissariat à l'Energie Atomique et aux Énergies Alternatives, Saint-Paul-Lez-Durance 13108, France
| | - Thierry Desnos
- Laboratoire de Biologie du Développement des Plantes, Institut de Biosciences et Biotechnology Aix-Marseille, Commissariat à l'Energie Atomique et aux Énergies Alternatives, Saint-Paul-Lez-Durance 13108, France
| | - Dong Liu
- Ministry of Education Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
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185
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Yeh CM, Kobayashi K, Fujii S, Fukaki H, Mitsuda N, Ohme-Takagi M. Blue Light Regulates Phosphate Deficiency-Dependent Primary Root Growth Inhibition in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2019; 10:1803. [PMID: 32082352 PMCID: PMC7005603 DOI: 10.3389/fpls.2019.01803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 12/24/2019] [Indexed: 05/09/2023]
Abstract
Plants have evolved mechanisms to improve utilization efficiency or acquisition of inorganic phosphate (Pi) in response to Pi deficiency, such as altering root architecture, secreting acid phosphatases, and activating the expression of genes related to Pi uptake and recycling. Although many genes responsive to Pi starvation have been identified, transcription factors that affect tolerance to Pi deficiency have not been well characterized. We show here that the ectopic expression of B-BOX32 (BBX32) and the mutation of ELONGATED HYPOCOTYL 5 (HY5), whose transcriptional activity is negatively regulated by BBX32, resulted in the tolerance to Pi deficiency in Arabidopsis. The primary root lengths of 35S:BBX32 and hy5 plants were only slightly inhibited under Pi deficient condition and the fresh weights were significantly higher than those of wild type. The Pi deficiency-tolerant root phenotype of hy5 was similarly observed when grown on the medium without Pi. In addition, a double mutant, hy5 slr1, without lateral roots, also showed a long primary root phenotype under phosphate deficiency, indicating that the root phenotype of hy5 does not result from an increase of external Pi uptake. Moreover, we found that blue light may regulate Pi deficiency-dependent primary root growth inhibition through activating peroxidase gene expression, suggesting the Pi-deficiency tolerant root phenotype of hy5 may be due to blockage of blue light responses. Altogether, this study points out light quality may play an important role in the regulation of Pi deficiency responses. It may contribute to regulate plant growth under Pi deficiency through proper illumination.
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Affiliation(s)
- Chuan-Ming Yeh
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
- Institute of Tropical Plant Sciences and Microbiology, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Koichi Kobayashi
- Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Sho Fujii
- Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | | | - Nobutaka Mitsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Masaru Ohme-Takagi
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
- *Correspondence: Masaru Ohme-Takagi,
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186
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Xu L, Zhao H, Wan R, Liu Y, Xu Z, Tian W, Ruan W, Wang F, Deng M, Wang J, Dolan L, Luan S, Xue S, Yi K. Identification of vacuolar phosphate efflux transporters in land plants. NATURE PLANTS 2019; 5:84-94. [PMID: 30626920 DOI: 10.1038/s41477-018-0334-3] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 11/22/2018] [Indexed: 05/24/2023]
Abstract
Inorganic phosphate (Pi) is an essential component of all life forms. Land plants acquire Pi from the soil through roots and associated symbioses, and it is then transported throughout the plant. When sufficient, excess Pi is stored in vacuoles for remobilization following Pi deficiency. Although Pi release from the vacuoles to the cytoplasm serves as a critical mechanism for plants to adapt to low-Pi stress, the transporters responsible for vacuolar Pi efflux have not been identified. Here, we identified a pair of Oryza sativa vacuolar Pi efflux transporters (OsVPE1 and OsVPE2) that were more abundant in plants grown under Pi-deficient conditions. These OsVPE proteins can transport Pi into yeast cells and Xenopus laevis oocytes. Vacuolar Pi content was higher in the loss-of-function Osvpe1 Osvpe2 double mutant than in wild type, particularly under low-Pi stress. Overexpression of either OsVPE1 or OsVPE2 in transgenic plants reduced vacuolar Pi content, consistent with a role in vacuolar Pi efflux. We demonstrate that these VPE proteins evolved from an ancient plasma membrane glycerol-3-phosphate transporter protein. Together, these data indicate that this transporter was recruited to the vacuolar membrane to catalyse Pi efflux during the course of land plant evolution.
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Affiliation(s)
- Lei Xu
- Key Laboratory of Plant Nutrition and Fertilizers, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hongyu Zhao
- Key Laboratory of Plant Nutrition and Fertilizers, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Renjing Wan
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yu Liu
- College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Zhuang Xu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Wang Tian
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Wenyuan Ruan
- Key Laboratory of Plant Nutrition and Fertilizers, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Fang Wang
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Minjuan Deng
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Junmin Wang
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Liam Dolan
- Department of Plant Sciences, University of Oxford, Oxford, UK
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Shaowu Xue
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Keke Yi
- Key Laboratory of Plant Nutrition and Fertilizers, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China.
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187
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Maruyama H, Sasaki T, Yamamoto Y, Wasaki J. AtALMT3 is Involved in Malate Efflux Induced by Phosphorus Deficiency in Arabidopsis thaliana Root Hairs. PLANT & CELL PHYSIOLOGY 2019; 60:107-115. [PMID: 30239977 DOI: 10.1093/pcp/pcy190] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 09/18/2018] [Indexed: 06/08/2023]
Abstract
Under phosphorus (P)-deficient conditions, organic acid secretion from roots plays an important role in P mobilization from insoluble P in the soil. In this study, we characterized AtALMT3, a homolog of the Arabidopsis thaliana aluminum-activated malate transporter family gene. Among the 14 AtALMT family genes, only AtALMT3 was significantly up-regulated in P-deficient roots. AtALMT3 promoter::β-glucuronidase is expressed in the epidermis in roots, especially in root hair cells. AtALMT3 protein was localized in the plasma membrane and in small vesicles. Fluorescence of AtALMT3::GFP was not observed on the vacuole membrane of protoplast after lysis, indicating that AtALMT3 localizes mainly in the plasma membrane. Compared with the wild-type (WT) line, malate exudation in the AtALMT3-knockdown line (atalmt3-1) and overexpression line (atalmt3-2) under P deficiency were, respectively, 37% and 126%. In contrast, no significant difference was found in citrate exudation among these lines. The complementation of the atalmt3-1 line with AtALMT3 recovered the malate exudation to the level of the WT. Taken together, these results suggest that AtALMT3 localized in root hair membranes is involved in malate efflux in response to P deficiency.
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Affiliation(s)
- Hayato Maruyama
- Graduate School of Biosphere Science, Hiroshima University, Kagamiyama 1-7-1, Higashi-Hiroshima, Japan
| | - Takayuki Sasaki
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, Japan
| | - Yoko Yamamoto
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, Japan
| | - Jun Wasaki
- Graduate School of Biosphere Science, Hiroshima University, Kagamiyama 1-7-1, Higashi-Hiroshima, Japan
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188
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Gallardo C, Hufnagel B, Casset C, Alcon C, Garcia F, Divol F, Marquès L, Doumas P, Péret B. Anatomical and hormonal description of rootlet primordium development along white lupin cluster root. PHYSIOLOGIA PLANTARUM 2019; 165:4-16. [PMID: 29493786 DOI: 10.1111/ppl.12714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 02/26/2018] [Accepted: 02/27/2018] [Indexed: 05/29/2023]
Abstract
Cluster root (CR) is one of the most spectacular plant developmental adaptations to hostile environment. It can be found in a few species from a dozen botanical families, including white lupin (Lupinus albus) in the Fabaceae family. These amazing structures are produced in phosphate-deprived conditions and are made of hundreds of short roots also known as rootlets. White lupin is the only crop bearing CRs and is considered as the model species for CR studies. However, little information is available on CRs atypical development, including the molecular events that trigger their formation. To provide insights on CR formation, we performed an anatomical and cellular description of rootlet development in white lupin. Starting with a classic histological approach, we described rootlet primordium development and defined eight developmental stages from rootlet initiation to their emergence. Due to the major role of hormones in the developmental program of root system, we next focussed on auxin-related mechanisms. We observed the establishment of an auxin maximum through rootlet development in transgenic roots expressing the DR5:GUS auxin reporter. Expression analysis of the main auxin-related genes [TIR, Auxin Response Factor (ARF) and AUX/IAA] during a detailed time course revealed specific expression associated with the formation of the rootlet primordium. We showed that L. albus TRANSPORT INHIBITOR RESPONSE 1b is expressed during rootlet primordium formation and that L. albus AUXIN RESPONSE FACTOR 5 is expressed in the vasculature but absent in the primordium itself. Altogether, our results describe the very early cellular events leading to CR formation and reveal some of the auxin-related mechanisms.
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Affiliation(s)
- Cécilia Gallardo
- BPMP, University of Montpellier, CNRS, INRA, SupAgro, Montpellier, France
| | - Bárbara Hufnagel
- BPMP, University of Montpellier, CNRS, INRA, SupAgro, Montpellier, France
| | - Célia Casset
- BPMP, University of Montpellier, CNRS, INRA, SupAgro, Montpellier, France
| | - Carine Alcon
- BPMP, University of Montpellier, CNRS, INRA, SupAgro, Montpellier, France
| | - Fanny Garcia
- BPMP, University of Montpellier, CNRS, INRA, SupAgro, Montpellier, France
| | - Fanchon Divol
- BPMP, University of Montpellier, CNRS, INRA, SupAgro, Montpellier, France
| | - Laurence Marquès
- BPMP, University of Montpellier, CNRS, INRA, SupAgro, Montpellier, France
| | - Patrick Doumas
- BPMP, University of Montpellier, CNRS, INRA, SupAgro, Montpellier, France
| | - Benjamin Péret
- BPMP, University of Montpellier, CNRS, INRA, SupAgro, Montpellier, France
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189
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F-box protein RAE1 regulates the stability of the aluminum-resistance transcription factor STOP1 in Arabidopsis. Proc Natl Acad Sci U S A 2018; 116:319-327. [PMID: 30559192 DOI: 10.1073/pnas.1814426116] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Aluminum (Al) toxicity is a major factor limiting crop production on acid soils, which represent over 30% of the world's arable land. Some plants have evolved mechanisms to detoxify Al. Arabidopsis, for example, secretes malate via the AtALMT1 transporter to chelate and detoxify Al. The C2H2-type transcription factor STOP1 plays a crucial role in Al resistance by inducing the expression of a set of genes, including AtALMT1 Here, we identify and characterize an F-box protein-encoding gene regulation of Atalmt1 expression 1 (RAE1) that regulates the level of STOP1. Mutation and overexpression of RAE1 increases or decreases the expression of AtALMT1 and other STOP1-regulated genes, respectively. RAE1 interacts with and promotes the degradation of STOP1 via the ubiquitin-26S proteasome pathway, while Al stress promotes the accumulation of STOP1. We find that STOP1 up-regulates RAE1 expression by directly binding to the RAE1 promoter, thus forming a negative feedback loop between STOP1 and RAE1. Our results demonstrate that RAE1 influences Al resistance through the ubiquitination and degradation of STOP1.
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190
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Magalhaes JV, Piñeros MA, Maciel LS, Kochian LV. Emerging Pleiotropic Mechanisms Underlying Aluminum Resistance and Phosphorus Acquisition on Acidic Soils. FRONTIERS IN PLANT SCIENCE 2018; 9:1420. [PMID: 30319678 PMCID: PMC6168647 DOI: 10.3389/fpls.2018.01420] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 09/06/2018] [Indexed: 05/25/2023]
Abstract
Aluminum (Al) toxicity on acidic soils significantly damages plant roots and inhibits root growth. Hence, crops intoxicated by Al become more sensitive to drought stress and mineral nutrient deficiencies, particularly phosphorus (P) deficiency, which is highly unavailable on tropical soils. Advances in our understanding of the physiological and genetic mechanisms that govern plant Al resistance have led to the identification of Al resistance genes, both in model systems and in crop species. It has long been known that Al resistance has a beneficial effect on crop adaptation to acidic soils. This positive effect happens because the root systems of Al resistant plants show better development in the presence of soil ionic Al3+ and are, consequently, more efficient in absorbing sub-soil water and mineral nutrients. This effect of Al resistance on crop production, by itself, warrants intensified efforts to develop and implement, on a breeding scale, modern selection strategies to profit from the knowledge of the molecular determinants of plant Al resistance. Recent studies now suggest that Al resistance can exert pleiotropic effects on P acquisition, potentially expanding the role of Al resistance on crop adaptation to acidic soils. This appears to occur via both organic acid (OA)- and non-OA transporters governing a joint, iron-dependent interplay between Al resistance and enhanced P uptake, via changes in root system architecture. Current research suggests this interplay to be part of a P stress response, suggesting that this mechanism could have evolved in crop species to improve adaptation to acidic soils. Should this pleiotropism prove functional in crop species grown on acidic soils, molecular breeding based on Al resistance genes may have a much broader impact on crop performance than previously anticipated. To explore this possibility, here we review the components of this putative effect of Al resistance genes on P stress responses and P nutrition to provide the foundation necessary to discuss the recent evidence suggesting pleiotropy as a genetic linkage between Al resistance and P efficiency. We conclude by exploring what may be needed to enhance the utilization of Al resistance genes to improve crop production on acidic soils.
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Affiliation(s)
- Jurandir V. Magalhaes
- Embrapa Maize and Sorghum, Sete Lagoas, Brazil
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Miguel A. Piñeros
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY, United States
| | - Laiane S. Maciel
- Embrapa Maize and Sorghum, Sete Lagoas, Brazil
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Leon V. Kochian
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, SK, Canada
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191
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Feeding the Walls: How Does Nutrient Availability Regulate Cell Wall Composition? Int J Mol Sci 2018; 19:ijms19092691. [PMID: 30201905 PMCID: PMC6164997 DOI: 10.3390/ijms19092691] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 08/27/2018] [Accepted: 08/29/2018] [Indexed: 01/12/2023] Open
Abstract
Nutrients are critical for plants to grow and develop, and nutrient depletion severely affects crop yield. In order to optimize nutrient acquisition, plants adapt their growth and root architecture. Changes in growth are determined by modifications in the cell walls surrounding every plant cell. The plant cell wall, which is largely composed of complex polysaccharides, is essential for plants to attain their shape and to protect cells against the environment. Within the cell wall, cellulose strands form microfibrils that act as a framework for other wall components, including hemicelluloses, pectins, proteins, and, in some cases, callose, lignin, and suberin. Cell wall composition varies, depending on cell and tissue type. It is governed by synthesis, deposition and remodeling of wall components, and determines the physical and structural properties of the cell wall. How nutrient status affects cell wall synthesis and organization, and thus plant growth and morphology, remains poorly understood. In this review, we aim to summarize and synthesize research on the adaptation of root cell walls in response to nutrient availability and the potential role of cell walls in nutrient sensing.
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192
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Ruffel S. Nutrient-Related Long-Distance Signals: Common Players and Possible Cross-Talk. PLANT & CELL PHYSIOLOGY 2018; 59:1723-1732. [PMID: 30085239 DOI: 10.1093/pcp/pcy152] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 07/19/2018] [Indexed: 05/20/2023]
Abstract
Nutrient fluctuations are more a rule rather than an exception in the life of sessile organisms such as plants. Despite this constraint that adds up to abiotic and biotic stresses, plants are able to accomplish their life cycle thanks to an efficient signaling network that reciprocally controls nutrient acquisition and use with growth and development. The majority of nutrients are acquired by the root system where multiple local signaling pathways that rely on nutrient-sensing systems are implemented to direct root growth toward soil resources. Moreover, long-distance signaling plays an essential role in integrating nutrient availability at the whole-plant level and adjusting nutrient acquisition to plant growth requirements. By studying the signaling network for single mineral nutrients, several long-distance signals traveling between roots and shoots and taking a diversity of forms have been identified and are summarized here. However, the nutritional environment is multifactorial, adding a tremendous complexity for our understanding of the nutrient signaling network as a unique system. For instance, long-distance signals are expected to support this nutrient cross-talk in part, but the mechanisms are still largely unknown. Therefore, the involvement of possible long-distance signals as conveyers of nutrient cross-talk is discussed here together with approaches and strategies that are now considered to build a picture from the nutrient signaling puzzle.
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Affiliation(s)
- Sandrine Ruffel
- BPMP, INRA, CNRS, Universit� de Montpellier, Montpellier SupAgro, Montpellier, France
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193
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Gutiérrez-Alanís D, Ojeda-Rivera JO, Yong-Villalobos L, Cárdenas-Torres L, Herrera-Estrella L. Adaptation to Phosphate Scarcity: Tips from Arabidopsis Roots. TRENDS IN PLANT SCIENCE 2018; 23:721-730. [PMID: 29764728 DOI: 10.1016/j.tplants.2018.04.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/13/2018] [Accepted: 04/20/2018] [Indexed: 05/21/2023]
Abstract
Phosphorus (P) availability is a limiting factor for plant growth and development. Root tip contact with low Pi media triggers diverse changes in the root architecture of Arabidopsis thaliana. The most conspicuous among these modifications is the inhibition of root growth, which is triggered by a shift from an indeterminate to a determinate root growth program. This phenomenon takes place in the root tip and involves a reduction in cell elongation, a decrease in cell proliferation, and the induction of premature cell differentiation, resulting in meristem exhaustion. Here, we review recent findings in the root response of A. thaliana to low Pi availability and discuss the cellular and genetic basis of the inhibition of root growth in Pi-deprived seedlings.
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Affiliation(s)
- Dolores Gutiérrez-Alanís
- Metabolic Engineering Group, Unidad de Genómica Avanzada, Laboratorio Nacional de Genómica para la Biodiversidad (LANGEBIO) del Centro de Investigación y Estudios Avanzados, Km. 9.6 Libramiento Norte Carr. Irapuato-León, 36821, Irapuato, Guanajuato, México; These authors contributed equally to this manuscript
| | - Jonathan Odilón Ojeda-Rivera
- Metabolic Engineering Group, Unidad de Genómica Avanzada, Laboratorio Nacional de Genómica para la Biodiversidad (LANGEBIO) del Centro de Investigación y Estudios Avanzados, Km. 9.6 Libramiento Norte Carr. Irapuato-León, 36821, Irapuato, Guanajuato, México; These authors contributed equally to this manuscript
| | - Lenin Yong-Villalobos
- Metabolic Engineering Group, Unidad de Genómica Avanzada, Laboratorio Nacional de Genómica para la Biodiversidad (LANGEBIO) del Centro de Investigación y Estudios Avanzados, Km. 9.6 Libramiento Norte Carr. Irapuato-León, 36821, Irapuato, Guanajuato, México
| | - Luis Cárdenas-Torres
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Apartado Postal 510-3, Cuernavaca, 62250, Morelos, México
| | - Luis Herrera-Estrella
- Metabolic Engineering Group, Unidad de Genómica Avanzada, Laboratorio Nacional de Genómica para la Biodiversidad (LANGEBIO) del Centro de Investigación y Estudios Avanzados, Km. 9.6 Libramiento Norte Carr. Irapuato-León, 36821, Irapuato, Guanajuato, México.
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194
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Singh AP, Fridman Y, Holland N, Ackerman-Lavert M, Zananiri R, Jaillais Y, Henn A, Savaldi-Goldstein S. Interdependent Nutrient Availability and Steroid Hormone Signals Facilitate Root Growth Plasticity. Dev Cell 2018; 46:59-72.e4. [DOI: 10.1016/j.devcel.2018.06.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 03/27/2018] [Accepted: 06/04/2018] [Indexed: 12/16/2022]
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195
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Bechtold U, Field B. Molecular mechanisms controlling plant growth during abiotic stress. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:2753-2758. [PMID: 29788471 PMCID: PMC5961130 DOI: 10.1093/jxb/ery157] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Affiliation(s)
- Ulrike Bechtold
- School of Biological Sciences, University of Essex, Colchester UK
- Correspondence: or
| | - Benjamin Field
- Aix Marseille Univ, CEA, CNRS, UMR7265 BVME, Marseille, France
- Correspondence: or
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196
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Ramesh SA, Kamran M, Sullivan W, Chirkova L, Okamoto M, Degryse F, McLaughlin M, Gilliham M, Tyerman SD. Aluminum-Activated Malate Transporters Can Facilitate GABA Transport. THE PLANT CELL 2018; 30:1147-1164. [PMID: 29618628 PMCID: PMC6002190 DOI: 10.1105/tpc.17.00864] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/27/2018] [Accepted: 04/02/2018] [Indexed: 05/02/2023]
Abstract
Plant aluminum-activated malate transporters (ALMTs) are currently classified as anion channels; they are also known to be regulated by diverse signals, leading to a range of physiological responses. Gamma-aminobutyric acid (GABA) regulation of anion flux through ALMT proteins requires a specific amino acid motif in ALMTs that shares similarity with a GABA binding site in mammalian GABAA receptors. Here, we explore why TaALMT1 activation leads to a negative correlation between malate efflux and endogenous GABA concentrations ([GABA]i) in both wheat (Triticum aestivum) root tips and in heterologous expression systems. We show that TaALMT1 activation reduces [GABA]i because TaALMT1 facilitates GABA efflux but GABA does not complex Al3+ TaALMT1 also leads to GABA transport into cells, demonstrated by a yeast complementation assay and via 14C-GABA uptake into TaALMT1-expressing Xenopus laevis oocytes; this was found to be a general feature of all ALMTs we examined. Mutation of the GABA motif (TaALMT1F213C) prevented both GABA influx and efflux, and resulted in no correlation between malate efflux and [GABA]i We conclude that ALMTs are likely to act as both GABA and anion transporters in planta. GABA and malate appear to interact with ALMTs in a complex manner to regulate each other's transport, suggestive of a role for ALMTs in communicating metabolic status.
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Affiliation(s)
- Sunita A Ramesh
- ARC Centre of Excellence in Plant Energy Biology, Department of Plant Science, School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Glen Osmond SA 5064, Australia
| | - Muhammad Kamran
- ARC Centre of Excellence in Plant Energy Biology, Department of Plant Science, School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Glen Osmond SA 5064, Australia
| | - Wendy Sullivan
- ARC Centre of Excellence in Plant Energy Biology, Department of Plant Science, School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Glen Osmond SA 5064, Australia
| | - Larissa Chirkova
- ARC Industrial Transformation Research Hub for Wheat in a Hot and Dry Climate, Department of Plant Science, Waite Research Institute, School of Agriculture, Food, and Wine, University of Adelaide, Glen Osmond SA 5064, Australia
| | - Mamoru Okamoto
- ARC Industrial Transformation Research Hub for Wheat in a Hot and Dry Climate, Department of Plant Science, Waite Research Institute, School of Agriculture, Food, and Wine, University of Adelaide, Glen Osmond SA 5064, Australia
| | - Fien Degryse
- Fertilizer Technology Research Centre, School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Glen Osmond SA 5064, Australia
| | - Michael McLaughlin
- Fertilizer Technology Research Centre, School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Glen Osmond SA 5064, Australia
| | - Matthew Gilliham
- ARC Centre of Excellence in Plant Energy Biology, Department of Plant Science, School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Glen Osmond SA 5064, Australia
| | - Stephen D Tyerman
- ARC Centre of Excellence in Plant Energy Biology, Department of Plant Science, School of Agriculture, Food, and Wine, Waite Research Institute, University of Adelaide, Glen Osmond SA 5064, Australia
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197
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Kong X, Liu G, Liu J, Ding Z. The Root Transition Zone: A Hot Spot for Signal Crosstalk. TRENDS IN PLANT SCIENCE 2018; 23:403-409. [PMID: 29500073 DOI: 10.1016/j.tplants.2018.02.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/28/2018] [Accepted: 02/02/2018] [Indexed: 05/25/2023]
Abstract
The root transition zone (TZ), located between the apical meristem and basal elongation region, has a unique role in root growth and development. The root TZ is not only the active site for hormone crosstalk, but also the perception site for various environmental cues, such as aluminum (Al) stress and low phosphate (Pi) stress. We propose that the root TZ is a hot spot for the integration of diverse inputs from endogenous (hormonal) and exogenous (sensorial) stimuli to control root growth.
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Affiliation(s)
- Xiangpei Kong
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, College of Life Sciences, Shandong University, 27 Shanda South Road, Jinan, 250100, Shandong, China; These authors contributed equally to this work.
| | - Guangchao Liu
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, College of Life Sciences, Shandong University, 27 Shanda South Road, Jinan, 250100, Shandong, China; These authors contributed equally to this work
| | - Jiajia Liu
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, College of Life Sciences, Shandong University, 27 Shanda South Road, Jinan, 250100, Shandong, China
| | - Zhaojun Ding
- The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, College of Life Sciences, Shandong University, 27 Shanda South Road, Jinan, 250100, Shandong, China.
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198
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Hanchi M, Thibaud MC, Légeret B, Kuwata K, Pochon N, Beisson F, Cao A, Cuyas L, David P, Doerner P, Ferjani A, Lai F, Li-Beisson Y, Mutterer J, Philibert M, Raghothama KG, Rivasseau C, Secco D, Whelan J, Nussaume L, Javot H. The Phosphate Fast-Responsive Genes PECP1 and PPsPase1 Affect Phosphocholine and Phosphoethanolamine Content. PLANT PHYSIOLOGY 2018; 176:2943-2962. [PMID: 29475899 PMCID: PMC5884592 DOI: 10.1104/pp.17.01246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 02/06/2018] [Indexed: 05/24/2023]
Abstract
Phosphate starvation-mediated induction of the HAD-type phosphatases PPsPase1 (AT1G73010) and PECP1 (AT1G17710) has been reported in Arabidopsis (Arabidopsis thaliana). However, little is known about their in vivo function or impact on plant responses to nutrient deficiency. The preferences of PPsPase1 and PECP1 for different substrates have been studied in vitro but require confirmation in planta. Here, we examined the in vivo function of both enzymes using a reverse genetics approach. We demonstrated that PPsPase1 and PECP1 affect plant phosphocholine and phosphoethanolamine content, but not the pyrophosphate-related phenotypes. These observations suggest that the enzymes play a similar role in planta related to the recycling of polar heads from membrane lipids that is triggered during phosphate starvation. Altering the expression of the genes encoding these enzymes had no effect on lipid composition, possibly due to compensation by other lipid recycling pathways triggered during phosphate starvation. Furthermore, our results indicated that PPsPase1 and PECP1 do not influence phosphate homeostasis, since the inactivation of these genes had no effect on phosphate content or on the induction of molecular markers related to phosphate starvation. A combination of transcriptomics and imaging analyses revealed that PPsPase1 and PECP1 display a highly dynamic expression pattern that closely mirrors the phosphate status. This temporal dynamism, combined with the wide range of induction levels, broad expression, and lack of a direct effect on Pi content and regulation, makes PPsPase1 and PECP1 useful molecular markers of the phosphate starvation response.
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Affiliation(s)
- Mohamed Hanchi
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Marie-Christine Thibaud
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Bertrand Légeret
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Keiko Kuwata
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Nathalie Pochon
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Fred Beisson
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Aiqin Cao
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana 47907
| | - Laura Cuyas
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Pascale David
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Peter Doerner
- School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, United Kingdom
| | - Ali Ferjani
- Department of Biology, Tokyo Gakugei University, Koganei-shi, Tokyo, Japan 184-8501
| | - Fan Lai
- School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, United Kingdom
| | - Yonghua Li-Beisson
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Jérôme Mutterer
- Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, University of Strasbourg, 67084 Strasbourg, France
| | - Michel Philibert
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Kashchandra G Raghothama
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana 47907
| | - Corinne Rivasseau
- CEA, CNRS, INRA, Université Grenoble Alpes, Institut de Biosciences et Biotechnologies de Grenoble, UMR5168, Grenoble, France
| | - David Secco
- ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Perth 6009 WA, Australia
| | - James Whelan
- Department of Animal, Plant, and Soil Science, School of Life Science, ARC Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora 3086, Australia
| | - Laurent Nussaume
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Hélène Javot
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
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199
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Peng W, Wu W, Peng J, Li J, Lin Y, Wang Y, Tian J, Sun L, Liang C, Liao H. Characterization of the soybean GmALMT family genes and the function of GmALMT5 in response to phosphate starvation. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2018; 60:216-231. [PMID: 29045000 DOI: 10.1111/jipb.12604] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Accepted: 10/16/2017] [Indexed: 05/27/2023]
Abstract
A potential mechanism to enhance utilization of sparingly soluble forms of phosphorus (P) is the root secretion of malate, which is mainly mediated by the ALMT gene family in plants. In this study, a total of 34 GmALMT genes were identified in the soybean genome. Expression patterns diverged considerably among GmALMTs in response to phosphate (Pi) starvation in leaves, roots and flowers, with expression altered by P availability in 26 of the 34 GmALMTs. One root-specific GmALMT whose expression was significantly enhanced by Pi-starvation, GmALMT5, was studied in more detail to determine its possible role in soybean P nutrition. Analysis of GmALMT5 tissue expression patterns, subcellular localization, and malate exudation from transgenic soybean hairy roots overexpressing GmALMT5, demonstrated that GmALMT5 is a plasma membrane protein that mediates malate efflux from roots. Furthermore, both growth and P content of transgenic Arabidopsis overexpressing GmALMT5 were significantly increased when sparingly soluble Ca-P was used as the external P source. Taken together, these results indicate that members of the soybean GmALMT gene family exhibit diverse responses to Pi starvation. One member of this family, GmALMT5, might contribute to soybean P efficiency by enhancing utilization of sparingly soluble P sources under P limited conditions.
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Affiliation(s)
- Wenting Peng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, South China Agricultural University, Guangzhou 510642, China
| | - Weiwei Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, South China Agricultural University, Guangzhou 510642, China
| | - Junchu Peng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, South China Agricultural University, Guangzhou 510642, China
| | - Jiaojiao Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, South China Agricultural University, Guangzhou 510642, China
| | - Yan Lin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, South China Agricultural University, Guangzhou 510642, China
| | - Yanan Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, South China Agricultural University, Guangzhou 510642, China
| | - Jiang Tian
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, South China Agricultural University, Guangzhou 510642, China
| | - Lili Sun
- Root Biology Center, Hai Xia Institute of Science and Technology, Fu Jian Agricultural and Forest University, Fuzhou 350002, China
| | - Cuiyue Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, South China Agricultural University, Guangzhou 510642, China
| | - Hong Liao
- Root Biology Center, Hai Xia Institute of Science and Technology, Fu Jian Agricultural and Forest University, Fuzhou 350002, China
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200
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Subrahmaniam HJ, Libourel C, Journet EP, Morel JB, Muños S, Niebel A, Raffaele S, Roux F. The genetics underlying natural variation of plant-plant interactions, a beloved but forgotten member of the family of biotic interactions. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2018; 93:747-770. [PMID: 29232012 DOI: 10.1111/tpj.13799] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 12/02/2017] [Accepted: 12/06/2017] [Indexed: 05/22/2023]
Abstract
Despite the importance of plant-plant interactions on crop yield and plant community dynamics, our understanding of the genetic and molecular bases underlying natural variation of plant-plant interactions is largely limited in comparison with other types of biotic interactions. By listing 63 quantitative trait loci (QTL) mapping and global gene expression studies based on plants directly challenged by other plants, we explored whether the genetic architecture and the function of the candidate genes underlying natural plant-plant interactions depend on the type of interactions between two plants (competition versus commensalism versus reciprocal helping versus asymmetry). The 16 transcriptomic studies are unevenly distributed between competitive interactions (n = 12) and asymmetric interactions (n = 4, all focusing on response to parasitic plants). By contrast, 17 and 30 QTL studies were identified for competitive interactions and asymmetric interactions (either weed suppressive ability or response to parasitic plants), respectively. Surprisingly, no studies have been carried out on the identification of genetic and molecular bases underlying natural variation in positive interactions. The candidate genes underlying natural plant-plant interactions can be classified into seven categories of plant function that have been identified in artificial environments simulating plant-plant interactions either frequently (photosynthesis, hormones), only recently (cell wall modification and degradation, defense pathways against pathogens) or rarely (ABC transporters, histone modification and meristem identity/life history traits). Finally, we introduce several avenues that need to be explored in the future to obtain a thorough understanding of the genetic and molecular bases underlying plant-plant interactions within the context of realistic community complexity.
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Affiliation(s)
| | - Cyril Libourel
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
| | - Etienne-Pascal Journet
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
- AGIR, Université de Toulouse, INRA, INPT, INP-EI PURPAN, Castanet-Tolosan, France
| | - Jean-Benoît Morel
- BGPI, INRA, CIRAD, SupAgro, Université de Montpellier, Montpellier, France
| | - Stéphane Muños
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
| | - Andreas Niebel
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
| | - Sylvain Raffaele
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
| | - Fabrice Roux
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France
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