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Su R, Luo J, Wang Y, Xiao Y, Liu X, Deng H, Lu X, Chen Q, Chen G, Tang W, Zhang G. GDSL Lipase Gene HTA1 Negatively Regulates Heat Tolerance in Rice Seedlings by Regulating Reactive Oxygen Species Accumulation. Antioxidants (Basel) 2024; 13:592. [PMID: 38790697 PMCID: PMC11117967 DOI: 10.3390/antiox13050592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/26/2024] Open
Abstract
High temperature is a significant environmental stress that limits plant growth and agricultural productivity. GDSL lipase is a hydrolytic enzyme with a conserved GDSL sequence at the N-terminus, which has various biological functions, such as participating in plant growth, development, lipid metabolism, and stress resistance. However, little is known about the function of the GDSL lipase gene in the heat tolerance of rice. Here, we characterized a lipase family protein coding gene HTA1, which was significantly induced by high temperature in rice. Rice seedlings in which the mutant hta1 was knocked out showed enhanced heat tolerance, whereas the overexpressing HTA1 showed more sensitivity to heat stress. Under heat stress, hta1 could reduce plant membrane damage and reactive oxygen species (ROS) levels and elevate the activity of antioxidant enzymes. Moreover, real-time quantitative PCR (RT-qPCR) analysis showed that mutant hta1 significantly activated gene expression in antioxidant enzymes, heat response, and defense. In conclusion, our results suggest that HTA1 negatively regulates heat stress tolerance by modulating the ROS accumulation and the expression of heat-responsive and defense-related genes in rice seedlings. This research will provide a valuable resource for utilizing HTA1 to improve crop heat tolerance.
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Affiliation(s)
- Rui Su
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
| | - Jingkai Luo
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
| | - Yingfeng Wang
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
| | - Yunhua Xiao
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
| | - Xiong Liu
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
| | - Huabing Deng
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
| | - Xuedan Lu
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
| | - Qiuhong Chen
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
| | - Guihua Chen
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
| | - Wenbang Tang
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
- Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha 410000, China
- State Key Laboratory of Hybrid Rice, Changsha 410000, China
| | - Guilian Zhang
- College of Agronomy, Hunan Agricultural University, Changsha 410000, China; (R.S.); (J.L.); (Y.W.); (Y.X.); (X.L.); (H.D.); (X.L.); (Q.C.); (G.C.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha 410000, China
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Xu H, Wang H, Zhang Y, Yang X, Lv S, Hou D, Mo C, Wassie M, Yu B, Hu T. A synthetic light-inducible photorespiratory bypass enhances photosynthesis to improve rice growth and grain yield. PLANT COMMUNICATIONS 2023; 4:100641. [PMID: 37349987 PMCID: PMC10721467 DOI: 10.1016/j.xplc.2023.100641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 04/25/2023] [Accepted: 06/19/2023] [Indexed: 06/24/2023]
Abstract
Bioengineering of photorespiratory bypasses is an effective strategy for improving plant productivity by modulating photosynthesis. In previous work, two photorespiratory bypasses, the GOC and GCGT bypasses, increased photosynthetic rates but decreased seed-setting rate in rice (Oryza sativa), probably owing to excess photosynthate accumulation in the stem. To solve this bottleneck, we successfully developed a new synthetic photorespiratory bypass (called the GMA bypass) in rice chloroplasts by introducing Oryza sativa glycolate oxidase 1 (OsGLO1), Cucurbita maxima malate synthase (CmMS), and Oryza sativa ascorbate peroxidase7 (OsAPX7) into the rice genome using a high-efficiency transgene stacking system. Unlike the GOC and GCGT bypass genes driven by constitutive promoters, OsGLO1 in GMA plants was driven by a light-inducible Rubisco small subunit promoter (pRbcS); its expression dynamically changed in response to light, producing a more moderate increase in photosynthate. Photosynthetic rates were significantly increased in GMA plants, and grain yields were significantly improved under greenhouse and field conditions. Transgenic GMA rice showed no reduction in seed-setting rate under either test condition, unlike previous photorespiratory-bypass rice, probably reflecting proper modulation of the photorespiratory bypass. Together, these results imply that appropriate engineering of the GMA bypass can enhance rice growth and grain yield without affecting seed-setting rate.
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Affiliation(s)
- Huawei Xu
- College of Agriculture, Henan University of Science and Technology, Luoyang 471000, China.
| | - Huihui Wang
- College of Agriculture, Henan University of Science and Technology, Luoyang 471000, China
| | - Yanwen Zhang
- College of Agriculture, Henan University of Science and Technology, Luoyang 471000, China
| | - Xiaoyi Yang
- College of Agriculture, Henan University of Science and Technology, Luoyang 471000, China
| | - Shufang Lv
- College of Agriculture, Henan University of Science and Technology, Luoyang 471000, China
| | - Dianyun Hou
- College of Agriculture, Henan University of Science and Technology, Luoyang 471000, China
| | - Changru Mo
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China
| | - Misganaw Wassie
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China
| | - Bo Yu
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Tao Hu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China.
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Ma Y, Wen Y, Wang C, Wu Z, Yuan X, Xiong Y, Chen K, He L, Zhang Y, Wang Z, Li L, Yang Z, Sun Y, Chen Z, Ma J. ZIP Genes Are Involved in the Retransfer of Zinc Ions during the Senescence of Zinc-Deficient Rice Leaves. Int J Mol Sci 2023; 24:13989. [PMID: 37762290 PMCID: PMC10531140 DOI: 10.3390/ijms241813989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Rice lacks sufficient amounts of zinc despite its vitality for human health. Leaf senescence enables redistribution of nutrients to other organs, yet Zn retransfer during deficiency is often overlooked. In this hydroponic experiment, we studied the effect of Zn deficiency on rice seedlings, focusing on the fourth leaf under control and deficient conditions. Growth phenotype analysis showed that the growth of rice nodal roots was inhibited in Zn deficiency, and the fourth leaf exhibited accelerated senescence and increased Zn ion transfer. Analyzing differentially expressed genes showed that Zn deficiency regulates more ZIP family genes involved in Zn ion retransfer. OsZIP3 upregulation under Zn-deficient conditions may not be induced by Zn deficiency, whereas OsZIP4 is only induced during Zn deficiency. Gene ontology enrichment analysis showed that Zn-deficient leaves mobilized more biological pathways (BPs) during aging, and the enrichment function differed from that of normal aging leaves. The most apparent "zinc ion transport" BP was stronger than that of normal senescence, possibly due to Zn-deficient leaves mobilizing large amounts of BP related to lipid metabolism during senescence. These results provide a basis for further functional analyses of genes and the study of trace element transfer during rice leaf senescence.
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Affiliation(s)
- Yangming Ma
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Yanfang Wen
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Cheng Wang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Ziniu Wu
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Xiaojuan Yuan
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Ying Xiong
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Kairui Chen
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Limei He
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Yue Zhang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Zhonglin Wang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Leilei Li
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Zhiyuan Yang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Yongjian Sun
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Zhongkui Chen
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Jun Ma
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
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Mei W, Chen W, Wang Y, Liu Z, Dong Y, Zhang G, Deng H, Liu X, Lu X, Wang F, Chen G, Tang W, Xiao Y. Exogenous Kinetin Modulates ROS Homeostasis to Affect Heat Tolerance in Rice Seedlings. Int J Mol Sci 2023; 24:ijms24076252. [PMID: 37047228 PMCID: PMC10093947 DOI: 10.3390/ijms24076252] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 03/20/2023] [Accepted: 03/24/2023] [Indexed: 03/29/2023] Open
Abstract
Heat stress caused by rapidly changing climate warming has become a serious threat to crop growth worldwide. Exogenous cytokinin (CK) kinetin (KT) has been shown to have positive effects in improving salt and drought tolerance in plants. However, the mechanism of KT in heat tolerance in rice is poorly understood. Here, we found that exogenously adequate application of KT improved the heat stress tolerance of rice seedlings, with the best effect observed when the application concentration was 10−9 M. In addition, exogenous application of 10−9 M KT promoted the expression of CK-responsive OsRR genes, reduced membrane damage and reactive oxygen species (ROS) accumulation in rice, and increased the activity of antioxidant enzymes. Meanwhile, exogenous 10−9 M KT treatment significantly enhanced the expression of antioxidant enzymes, heat activation, and defense-related genes. In conclusion, exogenous KT treatment regulates heat tolerance in rice seedlings by modulating the dynamic balance of ROS in plants under heat stress.
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Zhang Y, Liu X, Su R, Xiao Y, Deng H, Lu X, Wang F, Chen G, Tang W, Zhang G. 9- cis-epoxycarotenoid dioxygenase 1 confers heat stress tolerance in rice seedling plants. FRONTIERS IN PLANT SCIENCE 2022; 13:1092630. [PMID: 36605966 PMCID: PMC9807918 DOI: 10.3389/fpls.2022.1092630] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
High temperature is one of the main constraints affecting plant growth and development. It has been reported that abscisic acid (ABA) synthesis gene 9-cis-epoxycarotenoid dioxygenase (NCED) positively regulates plant resistance to salt, cold, and drought stresses. However, little is known about the function of the NCED gene in heat tolerance of rice. Here, we found that OsNCED1 was a heat stress inducible gene. Rice seedlings overexpressing OsNCED1 showed enhanced heat tolerance with more abundant ABA content, whereas the knockout mutant osnced1 accumulated less ABA and showed more sensitive to heat stress. Under heat stress, increased expression of OsNCED1 could reduce membrane damage and reactive oxygen species (ROS) level of plants, and elevate the activity of antioxidant enzymes. Moreover, real time-quantitative PCR (RT-qPCR) analysis showed that overexpression of OsNCED1 significantly activated the expression of genes involved in antioxidant enzymes, ABA signaling pathway, heat response, and defense. Together, our results indicate that OsNCED1 positively regulates heat tolerance of rice seedling by raising endogenous ABA contents, which leads to the improved antioxidant capacity and activated expression of heat and ABA related genes.
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Affiliation(s)
- Yijin Zhang
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha, China
| | - Xiong Liu
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha, China
| | - Rui Su
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha, China
| | - Yunhua Xiao
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha, China
| | - Huabing Deng
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha, China
| | - Xuedan Lu
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha, China
| | - Feng Wang
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha, China
| | - Guihua Chen
- College of Agronomy, Hunan Agricultural University, Changsha, China
| | - Wenbang Tang
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha, China
- Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
- State Key Laboratory of Hybrid Rice, Changsha, China
| | - Guilian Zhang
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Changsha, China
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Tisarum R, Pongprayoon W, Sithtisarn S, Sampumphuang T, Sotesaritkul T, Datta A, Singh HP, Cha-Um S. Expression levels of genes involved in metal homeostasis, physiological adaptation, and growth characteristics of rice (Oryza sativa L.) genotypes under Fe and/or Al toxicity. PROTOPLASMA 2022; 259:1013-1028. [PMID: 34714403 DOI: 10.1007/s00709-021-01719-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
Acid sulphate soil contains high amounts of iron (Fe) and aluminum (Al), and their contamination has been reported as major problems, especially in rainfed and irrigated lowland paddy fields. Rice is sensitive to Fe and Al grown in acid soil (pH < 5.5), leading to growth inhibition and grain yield loss. The objective of this study was to evaluate Fe and/or Al uptake, translocation, physiological adaptation, metal toxicity, and growth inhibition in rice genotypes grown in acid soil. Fe and Al in the root tissues of all rice genotypes were enriched depending on the exogenous application of either Fe or Al in the soil solution, leading to root growth inhibition, especially in the KDML105 genotype. Expression level of OsYSL1 in KDML105 was increased in relation to metal uptake into root tissues, whereas OsVIT2 was downregulated, leading to Fe (50.3 mg g-1 DW or 13.1 folds over the control) and Al (4.8 mg g-1 DW or 2.2 folds over the control) translocation to leaf tissues. Consequently, leaf greenness (SPAD), net photosynthetic rate (Pn), stomatal conductance (gs), and transpiration rate (E) in the leaf tissues of genotype KDML105 under Fe + Al toxicity significantly declined by 28.4%, 35.3%, 55.6%, and 51.6% over the control, respectively. In Azucena (AZU; Fe/Al tolerant), there was a rapid uptake of Fe and Al by OsYSL1 expression in the root tissues, but a limited secretion into vacuole organelles by OsVIT2, leading to a maintenance of low level of toxicity driven by an enhanced accumulation of glutathione together with downregulation of OsGR expression level. In addition, Fe and Al restrictions in the root tissues of genotype RD35 were evident; therefore, crop stress index (CSI) of Fe + Al-treated plants was the maximum, leading to an inhibition of gs (53.6% over the control) and E (49.0% over the control). Consequently, free proline, total phenolic compounds, and ascorbic acid in the leaf tissues of rice under Fe + Al toxicity significantly increased by 3.2, 1.2, and 1.5 folds over the control, respectively, indicating their functions in non-enzymatic antioxidant defense. Moreover, physiological parameters including leaf temperature (Tleaf) increment, high level of CSI (>0.6), SPAD reduction, photon yield of PSII (ΦPSII) diminution, Pn, gs, and E inhibition in rice genotype IR64 (Fe/Al-sensitive) under Fe + Al treatment were clearly demonstrated as good indicators of metal-induced toxicity. Our results on Fe- and/or Al-tolerant screening to find out the candidate genotypes will contribute to present screening and breeding efforts, which in turn help increase rice production in the Fe/Al-contaminated acid soil under lowland conditions.
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Affiliation(s)
- Rujira Tisarum
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Wasinee Pongprayoon
- Department of Biology, Faculty of Science, Burapha University, Saen Suk, Chon Buri, 20131, Thailand
| | - Sayamon Sithtisarn
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Thapanee Sampumphuang
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Thanyaporn Sotesaritkul
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Avishek Datta
- Agricultural Systems and Engineering, Department of Food, Agriculture and Bioresources, School of Environment, Resources and Development, Asian Institute of Technology, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Harminder Pal Singh
- Department of Environment Studies, Faculty of Science, Panjab University, Chandigarh, 160014, India
| | - Suriyan Cha-Um
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand.
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Zhang Z, Liu C, Li K, Li X, Xu M, Guo Y. CLE14 functions as a "brake signal" to suppress age-dependent and stress-induced leaf senescence by promoting JUB1-mediated ROS scavenging in Arabidopsis. MOLECULAR PLANT 2022; 15:179-188. [PMID: 34530165 DOI: 10.1016/j.molp.2021.09.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/09/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
Leaf senescence is an important developmental process in the plant life cycle and has a significant impact on agriculture. When facing harsh environmental conditions, monocarpic plants often initiate early leaf senescence as an adaptive mechanism to ensure a complete life cycle. Upon initiation, the senescence process is fine-tuned through the coordination of both positive and negative regulators. Here, we report that the small secreted peptide CLAVATA3/ESR-RELATED 14 (CLE14) functions in the suppression of leaf senescence by regulating ROS homeostasis in Arabidopsis. Expression of the CLE14-encoding gene in leaves was significantly induced by age, high salinity, abscisic acid (ABA), salicylic acid, and jasmonic acid. CLE14 knockout plants displayed accelerated progression of both natural and salinity-induced leaf senescence, whereas increased CLE14 expression or treatments with synthetic CLE14 peptides delayed senescence. CLE14 peptide treatments also delayed ABA-induced senescence in detached leaves. Further analysis showed that overexpression of CLE14 led to reduced ROS levels in leaves, where higher expression of ROS scavenging genes was detected. Moreover, CLE14 signaling resulted in transcriptional activation of JUB1, a NAC family transcription factor previously identified as a negative regulator of senescence. Notably, the delay of leaf senescence, reduction in H2O2 level, and activation of ROS scavenging genes by CLE14 peptides were dependent on JUB1. Collectively, these results suggest that the small peptide CLE14 serves as a novel "brake signal" to regulate age-dependent and stress-induced leaf senescence through JUB1-mediated ROS scavenging.
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Affiliation(s)
- Zenglin Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China
| | - Cheng Liu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China
| | - Kui Li
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China
| | - Xiaoxu Li
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China
| | - Mengmeng Xu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China
| | - Yongfeng Guo
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
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Zakari SA, Zaidi SHR, Sunusi M, Dauda KD. Nitrogen deficiency regulates premature senescence by modulating flag leaf function, ROS homeostasis, and intercellular sugar concentration in rice during grain filling. JOURNAL OF GENETIC ENGINEERING AND BIOTECHNOLOGY 2021; 19:177. [PMID: 34812974 PMCID: PMC8611147 DOI: 10.1186/s43141-021-00275-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 11/04/2021] [Indexed: 11/13/2022]
Abstract
Background Leaf senescence occurs in an age-dependent manner, but the rate and timing of leaf senescence may be influenced by various biotic and abiotic factors. In the course of stress, the function, composition, and different components of photosynthetic apparatus occur to be synthesized homogeneously or degraded paradoxically due to different senescence-related processes. Nitrogen (N) deficiency is one of the critical environmental factors that induce leaf senescence, and its incidence may curtail leaf photosynthetic function and markedly alter the genetic information of plants that might result in low grain yield. However, the physiological and genetic mechanism underlying N deficiency regulates premature senescence, and flag leaf function, ROS homeostasis, and intercellular sugar concentration in rice during grain filling are not well understood. In this paper, Zhehui7954 an excellent indica restorer line (wildtype) and its corresponding mutant (psf) with the premature senescence of flag leaves were used to study the effect of different N supplies in the alteration of physiological and biochemical components of flag leaf organ and its functions during grain filling. Results The results showed that the psf mutant appeared to be more susceptible to the varying N supply levels than WT. For instance, the psf mutant showed considerably lower Pn, Chl a, Chl b, and Car contents than its WT. N deficiency (LN) decreased leaves photosynthetic activities, N metabolites, but significantly burst O2•−, H2O2, and relative conductivity (R1/R2) concentrations, which was consistent with the expression levels of senescence-associated genes. Sucrose, glucose, and C/N ratio concentrations increased with a decrease in N level, which was closely associated with N and non-structural carbohydrate translocation rates. Increases in POD activity were positively linked with the senescence-related enhancement of ROS generation under LN conditions, whereas, SOD, CAT, and APX activities showed opposite trends. High N (HN) supply significantly inhibits the transcripts of carbohydrate biosynthesis genes, while N assimilation gene transcripts gradually increased along with leaf senescence. The psf mutant had a relatively higher grain yield under HN treatment than LN, while WT had a higher grain yield under MN than HN and LN. Conclusions This work revealed that the C/N ratio and ROS undergo a gradual increase driven by interlinking positive feedback, providing a physiological framework connecting the participation of sugars and N assimilation in the regulation of leaf senescence. These results could be useful for achieving a higher yield of rice production by appropriate N supply and plant senescence regulation. Supplementary Information The online version contains supplementary material available at 10.1186/s43141-021-00275-3.
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Affiliation(s)
- Shamsu Ado Zakari
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China. .,Department of Crop Production, Audu Bako College of Agriculture, Dambatta, Kano, Nigeria.
| | - Syed Hassan Raza Zaidi
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China.,Department of Agronomy, University of Agriculture, Dera Ismail Khan, 29220, Pakistan
| | - Mustapha Sunusi
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China.,Department of Crop Science, Faculty of Agriculture, Federal University Dutse, Jigawa, Nigeria
| | - Kabiru Dawaki Dauda
- Department of Crop Science, Kano University of Science and Technology, Wudil, Kano, Nigeria
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9
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Costa JH, Roque ALM, Aziz S, Dos Santos CP, Germano TA, Batista MC, Thiers KLL, da Cruz Saraiva KD, Arnholdt-Schmitt B. Genome-wide identification of ascorbate-glutathione cycle gene families in soybean (Glycine max) reveals gene duplication events and specificity of gene members linked to development and stress conditions. Int J Biol Macromol 2021; 187:528-543. [PMID: 34302870 DOI: 10.1016/j.ijbiomac.2021.07.103] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 11/21/2022]
Abstract
Ascorbate-glutathione (AsA-GSH) cycle plays an important role in tuning beneficial ROS accumulation for intracellular signals and imparts plant tolerance to oxidative stress by detoxifying excess of ROS. Here, we present genome-wide identification of AsA-GSH cycle genes (APX, MDHAR, DHAR, and GR) in several leguminous species and expression analyses in G. max during stress, germination and tissue development. Our data revealed 24 genes in Glycine genus against the maximum of 15 in other leguminous species, which was due to 9 pars of duplicated genes mostly originated from sub/neofunctionalization. Cytosolic APX and MDHAR genes were highly expressed in different tissues and physiological conditions. Germination induced genes encoding AsA-GSH proteins from different cell compartments, whereas vegetative phase (leaves) stimulated predominantly genes related to chloroplast/mitochondria proteins. Moreover, cytosolic APX-1, 2, MDHAR-1a, 1b and GR genes were the primary genes linked to senescence and biotic stresses, while stAPX-a, b and GR (from organelles) were the most abiotic stress related genes. Biotic and abiotic stress tolerant genotypes generally showed increased MDHAR, DHAR and/or GR mRNA levels compared to susceptible genotypes. Overall, these data clarified evolutionary events in leguminous plants and point to the functional specificity of duplicated genes of the AsA-GSH cycle in G. max.
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Affiliation(s)
- José Hélio Costa
- Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970 Fortaleza, Ceara, Brazil; Non-Institutional Competence Focus (NICFocus) 'Functional Cell Reprogramming and Organism Plasticity' (FunCROP), coordinated from Foros de Vale de Figueira, Alentejo, Portugal.
| | - André Luiz Maia Roque
- Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970 Fortaleza, Ceara, Brazil
| | - Shahid Aziz
- Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970 Fortaleza, Ceara, Brazil; Non-Institutional Competence Focus (NICFocus) 'Functional Cell Reprogramming and Organism Plasticity' (FunCROP), coordinated from Foros de Vale de Figueira, Alentejo, Portugal
| | - Clesivan Pereira Dos Santos
- Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970 Fortaleza, Ceara, Brazil
| | - Thais Andrade Germano
- Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970 Fortaleza, Ceara, Brazil
| | - Mathias Coelho Batista
- Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970 Fortaleza, Ceara, Brazil
| | - Karine Leitão Lima Thiers
- Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970 Fortaleza, Ceara, Brazil
| | - Kátia Daniella da Cruz Saraiva
- Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970 Fortaleza, Ceara, Brazil; Federal Institute of Education, Science and Technology, Paraíba, Brazil
| | - Birgit Arnholdt-Schmitt
- Functional Genomics and Bioinformatics, Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60451-970 Fortaleza, Ceara, Brazil; Non-Institutional Competence Focus (NICFocus) 'Functional Cell Reprogramming and Organism Plasticity' (FunCROP), coordinated from Foros de Vale de Figueira, Alentejo, Portugal
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10
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Shen T, Zhang C, Liu F, Wang W, Lu Y, Chen R, He Y. High-Throughput Screening of Free Proline Content in Rice Leaf under Cadmium Stress Using Hyperspectral Imaging with Chemometrics. SENSORS (BASEL, SWITZERLAND) 2020; 20:E3229. [PMID: 32517150 PMCID: PMC7308835 DOI: 10.3390/s20113229] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 11/17/2022]
Abstract
Tracking of free proline (FP)-an indicative substance of heavy metal stress in rice leaf-is conducive to improve plant phenotype detection, which has important guiding significance for precise management of rice production. Hyperspectral imaging was used for high-throughput screening FP in rice leaves under cadmium (Cd) stress with five concentrations and four periods. The average spectral of rice leaves were used to show differences in optical properties. Partial least squares (PLS), least-squares support vector machine (LS-SVM) and extreme learning machine (ELM) models based on full spectra and effective wavelengths were established to detect FP content. Genetic algorithm (GA), competitive adaptive weighted sampling (CARS) and PLS weighting regression coefficient (Bw) were compared to screen the most effective wavelengths. Distribution map of the FP content in rice leaves were obtained to display the changes in the FP of leaves visually. The results illustrated that spectral differences increased with Cd stress time and FP content increased with Cd stress concentration. The best result for FP detection is the ELM model based on 27 wavelengths selected by CARS and Rp is 0.9426. Undoubtedly, hyperspectral imaging combined with chemometrics was a rapid, cost effective and non-destructive technique to excavate changes of FP in rice leaves under Cd stress.
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Affiliation(s)
- Tingting Shen
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (T.S.); (C.Z.); (W.W.); (Y.L.); (R.C.); (Y.H.)
| | - Chu Zhang
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (T.S.); (C.Z.); (W.W.); (Y.L.); (R.C.); (Y.H.)
| | - Fei Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (T.S.); (C.Z.); (W.W.); (Y.L.); (R.C.); (Y.H.)
- Key Laboratory of Spectroscopy Sensing, Ministry of Agriculture and Rural Affairs, Hangzhou 310058, China
- Huanan Industrial Technology Research Institute of Zhejiang University, Guangzhou 510700, China
| | - Wei Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (T.S.); (C.Z.); (W.W.); (Y.L.); (R.C.); (Y.H.)
| | - Yi Lu
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (T.S.); (C.Z.); (W.W.); (Y.L.); (R.C.); (Y.H.)
| | - Rongqin Chen
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (T.S.); (C.Z.); (W.W.); (Y.L.); (R.C.); (Y.H.)
| | - Yong He
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; (T.S.); (C.Z.); (W.W.); (Y.L.); (R.C.); (Y.H.)
- Key Laboratory of Spectroscopy Sensing, Ministry of Agriculture and Rural Affairs, Hangzhou 310058, China
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11
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Zhang W, Sheng J, Xu Y, Xiong F, Wu Y, Wang W, Wang Z, Yang J, Zhang J. Role of brassinosteroids in rice spikelet differentiation and degeneration under soil-drying during panicle development. BMC PLANT BIOLOGY 2019; 19:409. [PMID: 31533628 PMCID: PMC6749693 DOI: 10.1186/s12870-019-2025-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 09/10/2019] [Indexed: 05/11/2023]
Abstract
BACKGROUND Brassinosteroids (BRs) are a new group of plant hormones and play important roles in plant growth and development. However, little information is available if BRs could regulate spikelet development in rice (Oryza sativa L.) especially under soil-drying conditions. This study investigated whether and how BRs mediate the effect of soil-drying on spikelet differentiation and degeneration in rice. A rice cultivar was field-grown and exposed to three soil moisture treatments during panicle development, that is, well-watered (WW), moderate soil-drying (MD) and severe soil-drying (SD). RESULTS Compared with the WW treatment, the MD treatment enhanced BRs biosynthesis in young panicles, increased spikelet differentiation and reduced spikelet degeneration. The SD treatment had the opposite effects. Changes in expression levels of key rice inflorescence development genes (OsAPO2 and OsTAW1), ascorbic acid (AsA) content, and activities of enzymes involved AsA synthesis and recycle, and amount of nonstructural carbohydrates (NSC) in young panicles were consistent with those in BRs levels, whereas hydrogen peroxide (H2O2) content showed opposite trend. Knockdown of the BRs synthesis gene OsD11 or application of a BRs biosynthesis inhibitor to young panicles markedly decreased OsAPO2 and OsTAW1 expression levels, BRs and AsA contents, activities of enzymes involved AsA synthesis and recycle, NSC amount in rice panicles and spikelet differentiation but increased the H2O2 content and spikelet degeneration compared to the control (the wide type or application of water). The opposite effects were observed when exogenous BRs were applied. CONCLUSIONS The results suggest that BRs mediate the effect of soil-drying on spikelet differentiation and degeneration, and elevated BRs levels in rice panicles promote spikelet development under MD by enhancing inflorescence meristem activity, AsA recycle and NSC partitioning to the growing panicles.
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Affiliation(s)
- Weiyang Zhang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Jiayan Sheng
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Yunji Xu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Fei Xiong
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Yunfei Wu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Weilu Wang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Zhiqin Wang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Jianchang Yang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China.
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China.
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
| | - Jianhua Zhang
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
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12
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Aslam MM, Rehman S, Khatoon A, Jamil M, Yamaguchi H, Hitachi K, Tsuchida K, Li X, Sunohara Y, Matsumoto H, Komatsu S. Molecular Responses of Maize Shoot to a Plant Derived Smoke Solution. Int J Mol Sci 2019; 20:E1319. [PMID: 30875914 PMCID: PMC6471572 DOI: 10.3390/ijms20061319] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 02/14/2019] [Accepted: 03/05/2019] [Indexed: 11/16/2022] Open
Abstract
Plant-derived smoke has effects on plant growth. To find the molecular mechanism of plant-derived smoke on maize, a gel-free/label-free proteomic technique was used. The length of root and shoot were increased in maize by plant-derived smoke. Proteomic analysis revealed that 2000 ppm plant-derived smoke changed the abundance of 69 proteins in 4-days old maize shoot. Proteins in cytoplasm, chloroplast, and cell membrane were altered by plant-derived smoke. Catalytic, signaling, and nucleotide binding proteins were changed. Proteins related to sucrose synthase, nucleotides, signaling, and glutathione were significantly increased; however, cell wall, lipids, photosynthetic, and amino acid degradations related proteins were decreased. Based on proteomic and immunoblot analyses, ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) was decreased; however, RuBisCO activase was not changed by plant-derived smoke in maize shoot. Ascorbate peroxidase was not affected; however, peroxiredoxin was decreased by plant-derived smoke. Furthermore, the results from enzyme-activity and mRNA-expression analyses confirmed regulation of ascorbate peroxidase and the peroxiredoxinin reactive oxygen scavenging system. These results suggest that increases in sucrose synthase, nucleotides, signaling, and glutathione related proteins combined with regulation of reactive oxygen species and their scavenging system in response to plant-derived smoke may improve maize growth.
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Affiliation(s)
- Muhammad Mudasar Aslam
- Department of Botany, Kohat University of Science and Technology, Kohat 26000, Pakistan.
- Faculty of Environmental and Information Sciences, Fukui University of Technology, Fukui 910-8505, Japan.
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan.
| | - Shafiq Rehman
- Department of Botany, Kohat University of Science and Technology, Kohat 26000, Pakistan.
| | - Amana Khatoon
- Department of Botany, Kohat University of Science and Technology, Kohat 26000, Pakistan.
| | - Muhammad Jamil
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat 26000, Pakistan.
| | - Hisateru Yamaguchi
- Institute for Comprehensive Medical Science, Fujita Health University, Toyoake 470-1192, Japan.
| | - Keisuke Hitachi
- Institute for Comprehensive Medical Science, Fujita Health University, Toyoake 470-1192, Japan.
| | - Kunihiro Tsuchida
- Institute for Comprehensive Medical Science, Fujita Health University, Toyoake 470-1192, Japan.
| | - Xinyue Li
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan.
| | - Yukari Sunohara
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan.
| | - Hiroshi Matsumoto
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan.
| | - Setsuko Komatsu
- Faculty of Environmental and Information Sciences, Fukui University of Technology, Fukui 910-8505, Japan.
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13
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Gene mutation associated with esl mediates shifts on fungal community composition in rhizosphere soil of rice at grain-filling stage. Sci Rep 2018; 8:17521. [PMID: 30504850 PMCID: PMC6269515 DOI: 10.1038/s41598-018-35578-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 10/15/2018] [Indexed: 02/04/2023] Open
Abstract
Generally, plant roots shape the rhizosphere fungal community but how individual plant genes involved in senescence affect this shaping is less studied. We used an early senescence leaf (esl) mutant rice and compared it with its isogenic wild type variety to evaluate the effect of the vacuolar H+-ATPase (VHA-A1) gene mutation on the rhizosphere fungal community structure and composition using a metagenomic pyrosequencing approach. The most predominate fungal phyla identified for both isogenic lines belonged to Ascomycota, Basidiomycota and Glomeromycota, where Ascomycota were more prevalent in the esl mutant than the wild type variety. Real-time quantitative PCR analysis confirmed a significant rise in the richness of Cladosporium cladosporioides in esl mutant rice than the wild type variety. Correlation analysis revealed four most abundant genera identified for the esl mutant and their close association with yield and biomass decline, lipid peroxidation, lower root vitality, chlorophyll degradation and limited VHA activity. Higher K+ efflux, H+ and a lower Ca2+ influx was also observed in the esl mutant which could be the reason for abnormal functioning of mutant plants. These results illustrate that besides the well-known effect of senescence on plant physiology and yield decline, it can further shape the rhizosphere fungal community.
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14
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Guo X, Wang L, Chang X, Li Q, Abbasi AM. Influence of plant growth regulators on key‐coding genes expression associated with phytochemicals biosynthesis and antioxidant activity in soybean (
Glycine max
(L.) Merr) sprouts. Int J Food Sci Technol 2018. [DOI: 10.1111/ijfs.13992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xinbo Guo
- School of Food Science and Engineering South China University of Technology Guangzhou 510640 China
| | - Linzhen Wang
- School of Food Science and Engineering South China University of Technology Guangzhou 510640 China
| | - Xiaoxiao Chang
- Guangdong Academy of Agricultural Sciences Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization (MOA) Guangdong Province Key Laboratory of Tropical and Subtropical Fruit Tree Research Institute of Fruit Tree Research Guangzhou 510640 China
| | - Quan Li
- School of Food Science and Engineering South China University of Technology Guangzhou 510640 China
| | - Arshad Mehmood Abbasi
- Department of Environmental Sciences COMSATS Institute of Information Technology Abbottabad 22060 Pakistan
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15
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Wang J, Zhong X, Zhu K, Lv J, Lv X, Li F, Shi Z. Reactive oxygen species, antioxidant enzyme activity, and gene expression patterns in a pair of nearly isogenic lines of nicosulfuron-exposed waxy maize (Zea mays L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:19012-19027. [PMID: 29721793 DOI: 10.1007/s11356-018-2105-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 04/23/2018] [Indexed: 05/18/2023]
Abstract
Nicosulfuron is a post-emergence herbicide used for weed control in maize fields (Zea mays L.). Here, the pair of nearly isogenic inbred lines SN509-R (nicosulfuron resistant) and SN509-S (nicosulfuron sensitive) was used to study the effect of nicosulfuron on growth, oxidative stress, and the activity and gene expression of antioxidant enzymes in waxy maize seedlings. Nicosulfuron treatment was applied at the five-leaf stage and water treatment was used as control. After nicosulfuron treatment, the death of SN509-S might be associated with increased oxidative stress. Compared with SN509-R, higher O2·- and H2O2 accumulations were observed in SN509-S, which can severely damage lipids and proteins, thus reducing membrane stability. The effects were exacerbated with extended exposure time. Both O2·- and H2O2 detoxification is regulated by enzymes. After nicosulfuron treatment, superoxide dismutase (SOD), catalase, ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glutathione reductase (GR), and glutathione-S-transferase (GST) of SN509-S were significantly lower than those of SN509-R. Compared to SN509-R, ascorbate content (AA), glutathione (GSH) content, GSH to glutathione disulfide ratios, and AA to dehydroascorbate ratios significantly declined with increasing exposure time in SN509-S. Compared to SN509-S, nicosulfuron treatment increased the transcript levels of most of the APX genes except for APX1, and in contrast to Gst1, upregulated the transcription of sod9, MDHAR, DHAR, and GR genes in SN509-R. These results suggest that on a transcription level and in accordance with their responses, detoxifying enzymes play a vital role in the O2·- and H2O2 detoxification of maize seedlings under nicosulfuron exposure.
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Affiliation(s)
- Jian Wang
- Department of Agronomy, Shenyang Agricultural University, Shenyang, 110866, Liaoning, People's Republic of China
| | - Xuemei Zhong
- Department of Agronomy, Shenyang Agricultural University, Shenyang, 110866, Liaoning, People's Republic of China
| | - Kangning Zhu
- Department of Agronomy, Shenyang Agricultural University, Shenyang, 110866, Liaoning, People's Republic of China
| | - Jingbo Lv
- Department of Agronomy, Shenyang Agricultural University, Shenyang, 110866, Liaoning, People's Republic of China
| | - Xiangling Lv
- Department of Agronomy, Shenyang Agricultural University, Shenyang, 110866, Liaoning, People's Republic of China
| | - Fenghai Li
- Department of Agronomy, Shenyang Agricultural University, Shenyang, 110866, Liaoning, People's Republic of China.
| | - Zhensheng Shi
- Department of Agronomy, Shenyang Agricultural University, Shenyang, 110866, Liaoning, People's Republic of China.
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16
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Wang J, Zhong X, Li F, Shi Z. Effects of nicosulfuron on growth, oxidative damage, and the ascorbate-glutathione pathway in paired nearly isogenic lines of waxy maize (Zea mays L.). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2018; 145:108-117. [PMID: 29482726 DOI: 10.1016/j.pestbp.2018.01.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 01/23/2018] [Accepted: 01/30/2018] [Indexed: 06/08/2023]
Abstract
Nicosulfuron is a postemergence herbicide used for weed control in maize fields (Zea mays L.). We used the pair of nearly isogenic inbred lines, SN509-R (nicosulfuron resistant) and SN509-S (nicosulfuron sensitive), to study the effect of nicosulfuron on growth, oxidative stress, and the ascorbate-glutathione (AA-GSH) cycle in waxy maize seedlings. Nicosulfuron treatment was applied when the fourth leaves were fully developed and the obtained effects were compared to water treatment as control. After nicosulfuron treatment, compared to SN509-R, the death of SN509-S might be associated with increased oxidative stress, since higher O2- and H2O2 accumulations were observed in SN509-S. This in turn might have caused severe damage to lipids and proteins, thus reducing membrane stability. These effects were exacerbated with increasing exposure time. After nicosulfuron treatment, ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, glutathione reductase, and guaiacol peroxidase of SN509-S were significantly lower than those of SN509-R. Compared to SN509-R, dehydroascorbate content, glutathione (GSH) content, and GSH to glutathione disulphide ratios significantly declined with increasing exposure time in SN509-S. Our results suggest that the rapid degradation of nicosulfuron in SN509-R results in only a small and transient increase in reactive oxygen species (ROS). In contrast, in SN509-S, reduced nicosulfuron degradation leads to increase ROS, while at the same time, the AA-GSH pathway is not activated.
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Affiliation(s)
- Jian Wang
- Department of Agronomy, Shenyang Agricultural University, Shenyang, Liaoning 110866, PR China
| | - Xuemei Zhong
- Department of Agronomy, Shenyang Agricultural University, Shenyang, Liaoning 110866, PR China
| | - Fenghai Li
- Department of Agronomy, Shenyang Agricultural University, Shenyang, Liaoning 110866, PR China.
| | - Zhensheng Shi
- Department of Agronomy, Shenyang Agricultural University, Shenyang, Liaoning 110866, PR China.
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17
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Involvement of NADPH oxidase isoforms in the production of O2- manipulated by ABA in the senescing leaves of early-senescence-leaf (esl) mutant rice (Oryza sativa). PLoS One 2018; 13:e0190161. [PMID: 29309410 PMCID: PMC5757929 DOI: 10.1371/journal.pone.0190161] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 12/09/2017] [Indexed: 01/02/2023] Open
Abstract
In this study, the differences in reactive oxygen species (ROS) generation and abscisic acid (ABA) accumulation in senescing leaves were investigated by early-senescence-leaf (esl) mutant and its wild type, to clarify the relationship among ABA levels, ROS generation, and NADPH oxidase (Nox) in senescing leaves of rice (Oryza sativa). The temporal expression levels of OsNox isoforms in senescing leaves and their expression patterns in response to ABA treatment were determined through quantitative real-time reverse transcription PCR (qRT-PCR). Results showed that the flag leaf of the esl mutant generated more O2- concentrations and accumulated higher ABA levels than the wild-type cultivar did in the grain-filling stage. Exogenous ABA treatment induced O2- generation; however, it was depressed by diphenyleneiodonium chloride (DPI) pretreatment in the detached leaf segments. This finding suggested the involvement of NADPH oxidase in ABA-induced O2- generation. The esl mutant exhibited significantly higher expression of OsNox2, OsNox5, OsNox6, and OsNox7 in the initial of grain-filling stage, followed by sharply decrease. The transcriptional levels of OsNox1, OsNox3, and OsFR07 in the flag leaf of the esl mutant were significantly lower than those in the wild-type cultivar. The expression levels of OsNox2, OsNox5, OsNox6, and OsNox7 were significantly enhanced by exogenous ABA treatments. The enhanced expression levels of OsNox2 and OsNox6 were dependent on the duration of ABA treatment. The inducible expression levels of OsNox5 and OsNox7 were dependent on ABA concentrations. By contrast, exogenous ABA treatment severely repressed the transcripts of OsNox1, OsNox3, and OsFR07 in the detached leaf segments. Therefore, OsNox2, OsNox5, OsNox6, and OsNox7 were probably involved in the ABA-induced O2- generation in the initial stage of leaf senescence. Subsequently, other oxidases activated in deteriorating cells were associated with ROS generation and accumulation in the senescing leaves of the esl mutant. Conversely, OsNox1, OsNox3, and OsFR07 were not associated with ABA-induced O2- generation during leaf senescence.
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18
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Abstract
As a representative form of plant senescence, leaf senescence has received the most attention during the last two decades. In this chapter we summarize the initiation of leaf senescence by various internal and external signals, the progression of senescence including switches in gene expression, as well as changes at the biochemical and cellular levels during leaf senescence. Impacts of leaf senescence in agriculture and genetic approaches that have been used in manipulating leaf senescence of crop plants are discussed.
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Affiliation(s)
- Akhtar Ali
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong, China.,Nuclear Institute for Food and Agriculture, Peshawar, Pakistan
| | - Xiaoming Gao
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Yongfeng Guo
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong, China.
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19
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Liu F, Xiang N, Hu JG, Shijuan Y, Xie L, Brennan CS, Huang W, Guo X. The manipulation of gene expression and the biosynthesis of Vitamin C, E and folate in light-and dark-germination of sweet corn seeds. Sci Rep 2017; 7:7484. [PMID: 28790401 PMCID: PMC5548755 DOI: 10.1038/s41598-017-07774-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 07/03/2017] [Indexed: 11/09/2022] Open
Abstract
This study investigates the potential interrelationship between gene expression and biosynthesis of vitamin C, E and folate in sweet corn sprouts. Germination of sweet corn kernels was conducted in light and dark environments to determine if this relationship was regulated by photo-illumination. Results indicated that light and dark environments affected the DHAR, TMT and GTPCH expression and that these genes were the predominant genes of vitamin C, E and folate biosynthesis pathways respectively during the germination. Levels of vitamin C and folate increased during the germination of sweet corn seeds while vitamin E had a declining manner. Sweet corn sprouts had higher vitamin C and E levels as well as relevant gene expression levels in light environment while illumination had little influence on the folate contents and the gene expression levels during the germination. These results indicate that there might be a collaborative relationship between vitamin C and folate regulation during sweet corn seed germination, while an inhibitive regulation might exist between vitamin C and E.
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Affiliation(s)
- Fengyuan Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Nan Xiang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Jian Guang Hu
- Crop Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China.,Key Laboratory of Crops Genetics Improvement of Guangdong Province, Guangzhou, 510640, China
| | - Yan Shijuan
- Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Lihua Xie
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Charles Stephen Brennan
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China.,Department of Wine, Food and Molecular Bioscience, Lincoln University, Canterbury, 7647, New Zealand
| | - Wenjie Huang
- Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Xinbo Guo
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China.
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20
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Paradiso A, Caretto S, Leone A, Bove A, Nisi R, De Gara L. ROS Production and Scavenging under Anoxia and Re-Oxygenation in Arabidopsis Cells: A Balance between Redox Signaling and Impairment. FRONTIERS IN PLANT SCIENCE 2016; 7:1803. [PMID: 27990148 PMCID: PMC5130980 DOI: 10.3389/fpls.2016.01803] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 11/15/2016] [Indexed: 05/25/2023]
Abstract
Plants can frequently experience low oxygen concentrations due to environmental factors such as flooding or waterlogging. It has been reported that both anoxia and the transition from anoxia to re-oxygenation determine a strong imbalance in the cellular redox state involving the production of reactive oxygen species (ROS) and nitric oxide (NO). Plant cell cultures can be a suitable system to study the response to oxygen deprivation stress since a close control of physicochemical parameters is available when using bioreactors. For this purpose, Arabidopsis cell suspension cultures grown in a stirred bioreactor were subjected to a severe anoxic stress and analyzed during anoxia and re-oxygenation for alteration in ROS and NO as well as in antioxidant enzymes and metabolites. The results obtained by confocal microscopy showed the dramatic increase of ROS, H2O2, and NO during the anoxic shock. All the ascorbate-glutathione related parameters were altered during anoxia but restored during re-oxygenation. Anoxia also induced a slight but significant increase of α-tocopherol levels measured at the end of the treatment. Overall, the evaluation of cell defenses during anoxia and re-oxygenation in Arabidopsis cell cultures revealed that the immediate response involving the overproduction of reactive species activated the antioxidant machinery including ascorbate-glutathione system, α-tocopherol and the ROS-scavenging enzymes ascorbate peroxidase, catalase, and peroxidase making cells able to counteract the stress toward cell survival.
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Affiliation(s)
- Annalisa Paradiso
- Dipartimento di Biologia, Università degli Studi di Bari Aldo MoroBari, Italy
| | - Sofia Caretto
- Consiglio Nazionale delle Ricerche, Istituto di Scienze delle Produzioni AlimentariLecce, Italy
| | - Antonella Leone
- Consiglio Nazionale delle Ricerche, Istituto di Scienze delle Produzioni AlimentariLecce, Italy
| | - Anna Bove
- Dipartimento di Biologia, Università degli Studi di Bari Aldo MoroBari, Italy
| | - Rossella Nisi
- Consiglio Nazionale delle Ricerche, Istituto di Scienze delle Produzioni AlimentariLecce, Italy
| | - Laura De Gara
- Food Science and Nutrition Unit, Department of Medicine, Università Campus Bio-Medico di RomaRoma, Italy
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21
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Wang F, Liu J, Chen M, Zhou L, Li Z, Zhao Q, Pan G, Zaidi SHR, Cheng F. Involvement of Abscisic Acid in PSII Photodamage and D1 Protein Turnover for Light-Induced Premature Senescence of Rice Flag Leaves. PLoS One 2016; 11:e0161203. [PMID: 27532299 PMCID: PMC4988704 DOI: 10.1371/journal.pone.0161203] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/01/2016] [Indexed: 01/03/2023] Open
Abstract
D1 protein in the PSII reaction center is the major target of photodamage, and it exhibits the highest turnover rate among all the thylakoid proteins. In this paper, rice psf (premature senescence of flag leaves) mutant and its wild type were used to investigate the genotype-dependent alteration in PSII photo-damage and D1 protein turnover during leaf senescence and its relation to ABA accumulation in senescent leaves. The symptom and extent of leaf senescence of the psf mutant appeared to be sunlight-dependent under natural field condition. The psf also displayed significantly higher levels of ABA accumulation in senescent leaves than the wild type. However, the premature senescence lesion of psf leaves could be alleviated by shaded treatment, concomitantly with the strikingly suppressed ABA level in the shaded areas of flag leaves. The change in ABA concentration contributed to the regulation of shade-delayed leaf senescence. The participation of ABA in the timing of senescence initiation and in the subsequent rate of leaf senescence was closely associated with PSII photodamage and D1 protein turnover during leaf senescence, in which the transcriptional expression of several key genes (psbA, psbB, psbC and OsFtsH2) involved in D1 protein biosynthesis and PSII repair cycle was seriously suppressed by the significantly increased ABA level. This response resulted in the low rate of D1 protein synthesis and impaired repair recovery in the presence of ABA. The psf showed evidently decreased D1 protein amount in the senescent leaves. Both the inhibition of de novo synthesized D1 protein and the slow rate of proteolytic removal for the photodamaged D1 protein was among the most crucial steps for the linkage between light-dependent leaf senescence and the varying ABA concentration in psf mutant leaves. OsFtsH2 transcriptional expression possibly played an important role in the regulation of D1 protein turnover and PSII repair cycle in relation to ABA mediated leaf senescence.
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Affiliation(s)
- Fubiao Wang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jianchao Liu
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
| | - Minxue Chen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Lujian Zhou
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zhaowei Li
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
| | - Qian Zhao
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Gang Pan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Syed-Hassan-Raza Zaidi
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Fangmin Cheng
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- * E-mail:
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22
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Mustafiz A, Kumari S, Karan R. Ascribing Functions to Genes: Journey Towards Genetic Improvement of Rice Via Functional Genomics. Curr Genomics 2016; 17:155-76. [PMID: 27252584 PMCID: PMC4869004 DOI: 10.2174/1389202917666160202215135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 07/01/2015] [Accepted: 07/06/2015] [Indexed: 11/22/2022] Open
Abstract
Rice, one of the most important cereal crops for mankind, feeds more than half the world population. Rice has been heralded as a model cereal owing to its small genome size, amenability to easy transformation, high synteny to other cereal crops and availability of complete genome sequence. Moreover, sequence wealth in rice is getting more refined and precise due to resequencing efforts. This humungous resource of sequence data has confronted research fraternity with a herculean challenge as well as an excellent opportunity to functionally validate expressed as well as regulatory portions of the genome. This will not only help us in understanding the genetic basis of plant architecture and physiology but would also steer us towards developing improved cultivars. No single technique can achieve such a mammoth task. Functional genomics through its diverse tools viz. loss and gain of function mutants, multifarious omics strategies like transcriptomics, proteomics, metabolomics and phenomics provide us with the necessary handle. A paradigm shift in technological advances in functional genomics strategies has been instrumental in generating considerable amount of information w.r.t functionality of rice genome. We now have several databases and online resources for functionally validated genes but despite that we are far from reaching the desired milestone of functionally characterizing each and every rice gene. There is an urgent need for a common platform, for information already available in rice, and collaborative efforts between researchers in a concerted manner as well as healthy public-private partnership, for genetic improvement of rice crop better able to handle the pressures of climate change and exponentially increasing population.
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Affiliation(s)
- Ananda Mustafiz
- South Asian University, Akbar Bhawan, Chanakyapuri, New Delhi
| | - Sumita Kumari
- Sher-e-Kashmir University of Agriculture Sciences and Technology, Jammu 180009, India
| | - Ratna Karan
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville - 32611, Florida, USA
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23
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Yang X, Gong P, Li K, Huang F, Cheng F, Pan G. A single cytosine deletion in the OsPLS1 gene encoding vacuolar-type H+-ATPase subunit A1 leads to premature leaf senescence and seed dormancy in rice. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:2761-76. [PMID: 26994476 PMCID: PMC4861022 DOI: 10.1093/jxb/erw109] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Leaf senescence is a programmed developmental process orchestrated by many factors, but its molecular regulation is not yet fully understood. In this study, a novel Oryza sativa premature leaf senescence mutant (ospls1) was examined. Despite normal development in early seedlings, the ospls1 mutant leaves displayed lesion-mimics and early senescence, and a high transpiration rate after tillering. The mutant also showed seed dormancy attributable to physical (defect of micropyle structure) and physiological (abscisic acid sensitivity) factors. Using a map-based cloning approach, we determined that a cytosine deletion in the OsPLS1 gene encoding vacuolar H(+)-ATPase subunit A1 (VHA-A1) underlies the phenotypic abnormalities in the ospls1 mutant. The OsPSL1/VHA-A1 transcript levels progressively declined with the age-dependent leaf senescence in both the ospls1 mutant and its wild type. The significant decrease in both OsPSL1/VHA-A1 gene expression and VHA enzyme activity in the ospls1 mutant strongly suggests a negative regulatory role for the normal OsPLS1/VHA-A1 gene in the onset of rice leaf senescence. The ospls1 mutant featured higher salicylic acid (SA) levels and reactive oxygen species (ROS) accumulation, and activation of signal transduction by up-regulation of WRKY genes in leaves. Consistent with this, the ospls1 mutant exhibited hypersensitivity to exogenous SA and/or H2O2 Collectively, these results indicated that the OsPSL1/VAH-A1 mutation played a causal role in premature leaf senescence through a combination of ROS and SA signals. To conclude, OsPLS1 is implicated in leaf senescence and seed dormancy in rice.
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Affiliation(s)
- Xi Yang
- Department of Agronomy, Zijingang Campus, Zhejiang University, Hangzhou 310058, PR China
| | - Pan Gong
- Department of Agronomy, Zijingang Campus, Zhejiang University, Hangzhou 310058, PR China
| | - Kunyu Li
- Department of Agronomy, Zijingang Campus, Zhejiang University, Hangzhou 310058, PR China
| | - Fudeng Huang
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Fangmin Cheng
- Department of Agronomy, Zijingang Campus, Zhejiang University, Hangzhou 310058, PR China
| | - Gang Pan
- Department of Agronomy, Zijingang Campus, Zhejiang University, Hangzhou 310058, PR China
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24
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Sytykiewicz H. Expression Patterns of Genes Involved in Ascorbate-Glutathione Cycle in Aphid-Infested Maize (Zea mays L.) Seedlings. Int J Mol Sci 2016; 17:268. [PMID: 26907270 PMCID: PMC4813132 DOI: 10.3390/ijms17030268] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 01/27/2016] [Accepted: 02/05/2016] [Indexed: 11/16/2022] Open
Abstract
Reduced forms of ascorbate (AsA) and glutathione (GSH) are among the most important non-enzymatic foliar antioxidants in maize (Zea mays L.). The survey was aimed to evaluate impact of bird cherry-oat aphid (Rhopalosiphum padi L.) or grain aphid (Sitobion avenae F.) herbivory on expression of genes related to ascorbate-glutathione (AsA-GSH) cycle in seedlings of six maize varieties (Ambrozja, Nana, Tasty Sweet, Touran, Waza, Złota Karłowa), differing in resistance to the cereal aphids. Relative expression of sixteen maize genes encoding isoenzymes of ascorbate peroxidase (APX1, APX2, APX3, APX4, APX5, APX6, APX7), monodehydroascorbate reductase (MDHAR1, MDHAR2, MDHAR3, MDHAR4), dehydroascorbate reductase (DHAR1, DHAR2, DHAR3) and glutathione reductase (GR1, GR2) was quantified. Furthermore, effect of hemipterans’ attack on activity of APX, MDHAR, DHAR and GR enzymes, and the content of reduced and oxidized ascorbate and glutathione in maize plants were assessed. Seedling leaves of more resistant Z. mays varieties responded higher elevations in abundance of target transcripts. In addition, earlier and stronger aphid-triggered changes in activity of APX, MDHAR, DHAR and GR enzymes, and greater modulations in amount of the analyzed antioxidative metabolites were detected in foliar tissues of highly resistant Ambrozja genotype in relation to susceptible Tasty Sweet plants.
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Affiliation(s)
- Hubert Sytykiewicz
- Department of Biochemistry and Molecular Biology, Siedlce University of Natural Sciences and Humanities, Prusa 12, 08-110 Siedlce, Poland.
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25
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Wang G, Zhang H, Lai F, Wu H. Germinating Peanut (Arachis hypogaea L.) Seedlings Attenuated Selenite-Induced Toxicity by Activating the Antioxidant Enzymes and Mediating the Ascorbate-Glutathione Cycle. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:1298-1308. [PMID: 26824138 DOI: 10.1021/acs.jafc.5b05945] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Selenite can enhance the selenium nutrition level of crops, but excessive selenite may be toxic to plant growth. To elucidate the mechanisms underlying the role of selenite in production and detoxification of oxidative toxicity, peanut seedlings were developed with sodium selenite (0, 3, and 6 mg/L). The effects of selenite on antioxidant capacity, transcript levels of antioxidant enzyme genes, and enzyme activities in hypocotyl were investigated. The CuZn-SOD, GSH-Px, GST, and APX gene expression levels and their enzyme activities in selenite treatments were 1.0-3.6-fold of the control. Selenite also significantly increased the glutathione and ascorbate concentrations by mediating the ascorbate-glutathione cycle, and the selenite-induced hydrogen peroxide may act as a second messenger in the signaling pathways. This work has revealed a complex antioxidative response to selenite in peanut seedling. Understanding these mechanisms may help future research in increasing selenite tolerance and selenium accumulation in peanut and other crops.
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Affiliation(s)
- Guang Wang
- College of Light Industry and Food Sciences, South China University of Technology , Guangzhou 510640, China
| | - Hong Zhang
- College of Light Industry and Food Sciences, South China University of Technology , Guangzhou 510640, China
| | - Furao Lai
- College of Light Industry and Food Sciences, South China University of Technology , Guangzhou 510640, China
| | - Hui Wu
- College of Light Industry and Food Sciences, South China University of Technology , Guangzhou 510640, China
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