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Li L, He Y, Zhang Z, Shi Y, Zhang X, Xu X, Wu JL, Tang S. OsNAC109 regulates senescence, growth and development by altering the expression of senescence- and phytohormone-associated genes in rice. PLANT MOLECULAR BIOLOGY 2021; 105:637-654. [PMID: 33543390 PMCID: PMC7985107 DOI: 10.1007/s11103-021-01118-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 01/13/2021] [Indexed: 05/11/2023]
Abstract
We demonstrate that OsNAC109 regulates senescence, growth and development via binding to the cis-element CNTCSSNNSCAVG and altering the expression of multiple senescence- and hormone-associated genes in rice. The NAC family is one of the largest transcripton factor families in plants and plays an essential role in plant development, leaf senescence and responses to biotic/abiotic stresses through modulating the expression of numerous genes. Here, we isolated and characterized a novel yellow leaf 3 (yl3) mutant exhibiting arrested-growth, increased accumulation of reactive oxygen species (ROS), decreased level of soluble proteins, increased level of malondialdehyde (MDA), reduced activities of ROS scavenging enzymes, altered expression of photosynthesis and senescence/hormone-associated genes. The yellow leaf and arrested-growth trait was controlled by a single recessive gene located to chromosome 9. A single nucleotide substitution was detected in the mutant allele leading to premature termination of its coding protein. Genetic complementation could rescue the mutant phenotype while the YL3 knockout lines displayed similar phenotype to WT. YL3 was expressed in all tissues tested and predicted to encode a transcriptional factor OsNAC109 which localizes to the nucleus. It was confirmed that OsNAC109 could directly regulate the expression of OsNAP, OsNYC3, OsEATB, OsAMTR1, OsZFP185, OsMPS and OsGA2ox3 by targeting to the highly conserved cis-element CNTCSSNNSCAVG except OsSAMS1. Our results demonstrated that OsNAC109 is essential to rice leaf senescence, growth and development through regulating the expression of senescence- and phytohormone-associated genes in rice.
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Affiliation(s)
- Liangjian Li
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Yan He
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Zhihong Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Yongfeng Shi
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Xiaobo Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Xia Xu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Jian-Li Wu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China.
| | - Shaoqing Tang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China.
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Xiong E, Li Z, Zhang C, Zhang J, Liu Y, Peng T, Chen Z, Zhao Q. A study of leaf-senescence genes in rice based on a combination of genomics, proteomics and bioinformatics. Brief Bioinform 2020; 22:5998850. [PMID: 33257942 DOI: 10.1093/bib/bbaa305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/15/2020] [Accepted: 10/10/2020] [Indexed: 12/14/2022] Open
Abstract
Leaf senescence is a highly complex, genetically regulated and well-ordered process with multiple layers and pathways. Delaying leaf senescence would help increase grain yields in rice. Over the past 15 years, more than 100 rice leaf-senescence genes have been cloned, greatly improving the understanding of leaf senescence in rice. Systematically elucidating the molecular mechanisms underlying leaf senescence will provide breeders with new tools/options for improving many important agronomic traits. In this study, we summarized recent reports on 125 rice leaf-senescence genes, providing an overview of the research progress in this field by analyzing the subcellular localizations, molecular functions and the relationship of them. These data showed that chlorophyll synthesis and degradation, chloroplast development, abscisic acid pathway, jasmonic acid pathway, nitrogen assimilation and ROS play an important role in regulating the leaf senescence in rice. Furthermore, we predicted and analyzed the proteins that interact with leaf-senescence proteins and achieved a more profound understanding of the molecular principles underlying the regulatory mechanisms by which leaf senescence occurs, thus providing new insights for future investigations of leaf senescence in rice.
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Affiliation(s)
- Erhui Xiong
- College of Agriculture, Henan Agricultural University (HAU), China
| | - Zhiyong Li
- Academy for Advanced Interdisciplinary Studies, South University of Science and Technology, Shenzhen, China
| | - Chen Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | | | - Ye Liu
- College of Agriculture, HAU
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Yang S, Fang G, Zhang A, Ruan B, Jiang H, Ding S, Liu C, Zhang Y, Jaha N, Hu P, Xu Z, Gao Z, Wang J, Qian Q. Rice EARLY SENESCENCE 2, encoding an inositol polyphosphate kinase, is involved in leaf senescence. BMC PLANT BIOLOGY 2020; 20:393. [PMID: 32847519 PMCID: PMC7449006 DOI: 10.1186/s12870-020-02610-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 08/17/2020] [Indexed: 05/06/2023]
Abstract
BACKGROUND Early leaf senescence influences yield and yield quality by affecting plant growth and development. A series of leaf senescence-associated molecular mechanisms have been reported in rice. However, the complex genetic regulatory networks that control leaf senescence need to be elucidated. RESULTS In this study, an early senescence 2 (es2) mutant was obtained from ethyl methanesulfonate mutagenesis (EMS)-induced mutational library for the Japonica rice cultivar Wuyugeng 7 (WYG7). Leaves of es2 showed early senescence at the seedling stage and became severe at the tillering stage. The contents of reactive oxygen species (ROS) significantly increased, while chlorophyll content, photosynthetic rate, catalase (CAT) activity significantly decreased in the es2 mutant. Moreover, genes which related to senescence, ROS and chlorophyll degradation were up-regulated, while those associated with photosynthesis and chlorophyll synthesis were down-regulated in es2 mutant compared to WYG7. The ES2 gene, which encodes an inositol polyphosphate kinase (OsIPK2), was fine mapped to a 116.73-kb region on chromosome 2. DNA sequencing of ES2 in the mutant revealed a missense mutation, ES2 was localized to nucleus and plasma membrane of cells, and expressed in various tissues of rice. Complementation test and overexpression experiment confirmed that ES2 completely restored the normal phenotype, with chlorophyll contents and photosynthetic rate increased comparable with the wild type. These results reveal the new role of OsIPK2 in regulating leaf senescence in rice and therefore will provide additional genetic evidence on the molecular mechanisms controlling early leaf senescence. CONCLUSIONS The ES2 gene, encoding an inositol polyphosphate kinase localized in the nucleus and plasma membrane of cells, is essential for leaf senescence in rice. Further study of ES2 will facilitate the dissection of the genetic mechanisms underlying early leaf senescence and plant growth.
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Affiliation(s)
- Shenglong Yang
- Key Laboratory of Northeast Rice Biology and Breeding, Ministry of Agriculture/Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Guonan Fang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Anpeng Zhang
- Key Laboratory of Northeast Rice Biology and Breeding, Ministry of Agriculture/Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Banpu Ruan
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Hongzhen Jiang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Shilin Ding
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Chaolei Liu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Yu Zhang
- Key Laboratory of Northeast Rice Biology and Breeding, Ministry of Agriculture/Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Noushin Jaha
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Peng Hu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China
| | - Zhengjin Xu
- Key Laboratory of Northeast Rice Biology and Breeding, Ministry of Agriculture/Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China
| | - Zhenyu Gao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China.
| | - Jiayu Wang
- Key Laboratory of Northeast Rice Biology and Breeding, Ministry of Agriculture/Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China.
| | - Qian Qian
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang, 310006, People's Republic of China.
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Kong W, Wang L, Cao P, Li X, Ji J, Dong P, Yan X, Wang C, Wang H, Sun J. Identification and genetic analysis of EMS-mutagenized wheat mutants conferring lesion-mimic premature aging. BMC Genet 2020; 21:88. [PMID: 32807077 PMCID: PMC7430028 DOI: 10.1186/s12863-020-00891-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 07/20/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Lesion-mimic and premature aging (lmpa) mutant lmpa1 was identified from the ethyl methane sulfonate (EMS) mutant library in the bread wheat variety Keda 527 (KD527) background. To reveal the genetic basis of lmpa1 mutant, phenotypic observations and analyses of chlorophyll content and photosynthesis were carried out in lmpa1, KD527 and their F1 and F2 derivatives. Further, bulked segregation analysis (BSA) in combination with a 660 K SNP array were conducted on the F2 segregation population of lmpa1/Chinese spring (CS) to locate the lmpa1 gene. RESULTS Most agronomic traits of lmpa1 were similar to those of KD527 before lesion-like spots appeared. Genetic analysis indicated that the F1 plants from the crossing of lmpa1 and KD527 exhibited the lmpa phenotype and the F2 progenies showed a segregation of normal (wild type, WT) and lmpa, with the ratios of lmpa: WT = 124:36(χ2 = 1.008 < =3.841), indicating that lmpa is a dominant mutation. The combination of BSA and the SNP array analysis of CS, lmpa1 and lmpa1/CS F2 WT pool (50 plants) and lmpa pool (50 plants) showed that polymorphic SNPs were enriched on chromosome 5A, within a region of 30-40 Mb, indicating that the wheat premature aging gene Lmpa1 was probably located on the short arm of chromosome 5A. CONCLUSIONS EMS-mutagenized mutant lmpa1 deriving from elite wheat line KD527 conferred lmpa. Lmpa phenotype of lmpa1 mutant is controlled by a single dominant allele designated as Lmpa1, which affected wheat growth and development and reduced the thousand grain weight (tgw) of single plant in wheat. The gene Lmpa1 was tentatively located within the region of 30-40 Mb near to the short arm of chromosome 5A.
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Affiliation(s)
- Weiwei Kong
- Agronomy College, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Liming Wang
- Agronomy College, Henan University of Science and Technology, Luoyang, 471023, Henan, China.
| | - Pei Cao
- Institute of Botany, Chinese Academy of Sciences, Beijing, 10093, China
| | - Xingfeng Li
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultrual University, Taian, 271018, Shandong, China
| | - Jingjing Ji
- Agronomy College, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Puhui Dong
- Agronomy College, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Xuefang Yan
- Agronomy College, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Chunping Wang
- Agronomy College, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Honggang Wang
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultrual University, Taian, 271018, Shandong, China
| | - Jiaqiang Sun
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 10081, China.
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