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Yang Z, Yang X, Wei S, Shen F, Ji W. Exogenous melatonin delays leaves senescence and enhances saline and alkaline stress tolerance in grape seedlings. PLANT SIGNALING & BEHAVIOR 2024; 19:2334511. [PMID: 38650457 PMCID: PMC11042054 DOI: 10.1080/15592324.2024.2334511] [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: 02/05/2024] [Accepted: 03/19/2024] [Indexed: 04/25/2024]
Abstract
Saline and alkaline stress is one of the major abiotic stresses facing agricultural production, which severely inhibits the growth and yield of plant. The application of plant growth regulators can effectively prevent crop yield reduction caused by saline and alkaline stress. Exogenous melatonin (MT) can act as a signaling molecule involved in the regulation of a variety of physiological processes in plants, has been found to play a key role in enhancing the improvement of plant tolerance to abiotic stresses. However, the effects of exogenous MT on saline and alkaline tolerance of table grape seedlings and its mechanism have not been clarified. The aim of this study was to investigate the role of exogenous MT on morphological and physiological growth of table grape seedlings (Vitis vinifera L.) under saline and alkaline stress. The results showed that saline and alkaline stress resulted in yellowing and wilting of grape leaves and a decrease in chlorophyll content, whereas the application of exogenous MT alleviated the degradation of chlorophyll in grape seedling leaves caused by saline and alkaline stress and promoted the accumulation of soluble sugars and proline content. In addition, exogenous MT increased the activity of antioxidant enzymes, which resulted in the scavenging of reactive oxygen species (ROS) generated by saline and alkaline stress. In conclusion, exogenous MT was involved in the tolerance of grape seedlings to saline and alkaline stress, and enhanced the saline and alkaline resistance of grape seedlings to promote the growth and development of the grape industry in saline and alkaline areas.
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Affiliation(s)
- Zhongyi Yang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Xixi Yang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Shimei Wei
- Yuncheng Agriculture and Rural Bureau, Yuncheng, Shanxi, China
| | - Fengfeng Shen
- Yuncheng Agriculture and Rural Bureau, Yuncheng, Shanxi, China
| | - Wei Ji
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
- Yuncheng Agriculture and Rural Bureau, Yuncheng, Shanxi, China
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Zhang N, Zhang H, Lv Z, Bai B, Ren J, Shi X, Kang S, Zhao X, Yu H, Zhao T. Integrative multi-omics analysis reveals the crucial biological pathways involved in the adaptive response to NaCl stress in peanut seedlings. PHYSIOLOGIA PLANTARUM 2024; 176:e14266. [PMID: 38558467 DOI: 10.1111/ppl.14266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/02/2024] [Accepted: 03/05/2024] [Indexed: 04/04/2024]
Abstract
Plant growth is restricted by salt stress, which is a significant abiotic factor, particularly during the seedling stage. The aim of this study was to investigate the mechanisms underlying peanut adaptation to salt stress by transcriptomic and metabolomic analysis during the seedling stage. In this study, phenotypic variations of FH23 and NH5, two peanut varieties with contrasting tolerance to salt, changed obviously, with the strongest differences observed at 24 h. FH23 leaves wilted and the membrane system was seriously damaged. A total of 1470 metabolites were identified, with flavonoids being the most common (21.22%). Multi-omics analyses demonstrated that flavonoid biosynthesis (ko00941), isoflavones biosynthesis (ko00943), and plant hormone signal transduction (ko04075) were key metabolic pathways. The comparison of metabolites in isoflavone biosynthesis pathways of peanut varieties with different salt tolerant levels demonstrated that the accumulation of naringenin and formononetin may be the key metabolite leading to their different tolerance. Using our transcriptomic data, we identified three possible reasons for the difference in salt tolerance between the two varieties: (1) differential expression of LOC112715558 (HIDH) and LOC112709716 (HCT), (2) differential expression of LOC112719763 (PYR/PYL) and LOC112764051 (ABF) in the abscisic acid (ABA) signal transduction pathway, then (3) differential expression of genes encoding JAZ proteins (LOC112696383 and LOC112790545). Key metabolites and candidate genes related to improving the salt tolerance in peanuts were screened to promote the study of the responses of peanuts to NaCl stress and guide their genetic improvement.
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Affiliation(s)
- Nan Zhang
- College of Agriculture, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - He Zhang
- College of Agriculture, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Zhenghao Lv
- College of Agriculture, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Baiyi Bai
- School of Agriculture and Horticulture, Liaoning Agriculture Vocational and Technical College, Yingkou, Liaoning, China
| | - Jingyao Ren
- College of Agriculture, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Xiaolong Shi
- College of Agriculture, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Shuli Kang
- College of Agriculture, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Xinhua Zhao
- College of Agriculture, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Haiqiu Yu
- College of Agriculture, Shenyang Agricultural University, Shenyang, Liaoning, China
- School of Agriculture and Horticulture, Liaoning Agriculture Vocational and Technical College, Yingkou, Liaoning, China
| | - Tianhong Zhao
- College of Agriculture, Shenyang Agricultural University, Shenyang, Liaoning, China
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Li X, Guan C, Liu H, Wang T, Lin M, Zhou D, Zhang Y, Bi X. PvARL1 Increases Biomass Yield and Enhances Alkaline Tolerance in Switchgrass ( Panicum virgatum L.). PLANTS (BASEL, SWITZERLAND) 2024; 13:566. [PMID: 38475413 DOI: 10.3390/plants13050566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/06/2024] [Accepted: 02/09/2024] [Indexed: 03/14/2024]
Abstract
Switchgrass is an important bioenergy crop valued for its biomass yield and abiotic tolerance. Alkali stress is a major abiotic stress that significantly impedes plant growth and yield due to high salinity and pH; however, the response mechanism of switchgrass to alkali stress remains limited. Here, we characterized PvARL1, an ARF-like gene, which was up-regulated in both the shoot and root tissues under alkali stress conditions. Overexpression of PvARL1 not only improved alkali tolerance but also promoted biomass yield with more tiller and higher plant height in switchgrass. Moreover, PvARL1 overexpression lines displayed higher capacities in the maintenance of water content and photosynthetic stability compared with the controls under alkali treatments. A significant reduction in the ratio of electrolyte leakage, MDA content, and reactive oxygen species (ROS) showed that PvARL1 plays a positive role in protecting cell membrane integrity. In addition, PvARL1 also negatively affected the K+ efflux or uptake in roots to alleviate ion toxicity under alkali treatments. Overall, our results suggest that PvARL1 functions as a positive regulator in plant growth as well as in the plant response to alkali stress, which could be used to improve switchgrass biomass yield and alkali tolerance genetically.
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Affiliation(s)
- Xue Li
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
| | - Cong Guan
- Institute of Leisure Agriculture, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Huayue Liu
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
| | - Tingting Wang
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
| | - Mengzhuo Lin
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
| | - Die Zhou
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yunwei Zhang
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
| | - Xiaojing Bi
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
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Nie W, Gong B, Geng B, Wen D, Qiao P, Guo H, Shi Q. The Effects of Exogenous 2,4-Epibrassinolide on the Germination of Cucumber Seeds under NaHCO 3 Stress. PLANTS (BASEL, SWITZERLAND) 2024; 13:394. [PMID: 38337927 PMCID: PMC10856843 DOI: 10.3390/plants13030394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/20/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
This investigation focused on the suppressive impact of varying NaHCO3 concentrations on cucumber seed germination and the ameliorative effects of 2,4-Epibrassinolide (EBR). The findings revealed a negative correlation between NaHCO3 concentration and cucumber seed germination, with increased NaHCO3 concentrations leading to a notable decline in germination. Crucially, the application of exogenous EBR significantly counteracted this inhibition, effectively enhancing germination rates and seed vigor. Exogenous EBR was observed to substantially elevate the activities of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD), thereby mitigating oxidative damage triggered under NaHCO3 stress conditions. Additionally, EBR improved enzyme activity under alkaline stress conditions and reduced starch content in the seeds. Pertinently, EBR upregulated genes that were associated with gibberellin (GA) synthesis (GA20ox and GA3ox), and downregulated genes that were linked to abscisic acid (ABA) synthesis (NCED1 and NCED2). This led to an elevation in GA3 concentration and a reduction in ABA concentration within the cucumber seeds. Therefore, this study elucidates that alleviating oxidative stress, promoting starch catabolism, and regulating the GA and ABA balance are key mechanisms through which exogenous EBR mitigates the suppression of cucumber seed germination resulting from alkaline stress.
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Affiliation(s)
- Wenjing Nie
- Yantai Engineering Research Center for Plant Stem Cell Targeted Breeding, Shandong Institute of Sericulture, Yantai 264001, China; (W.N.)
| | - Biao Gong
- Stage Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
| | - Bing Geng
- Yantai Engineering Research Center for Plant Stem Cell Targeted Breeding, Shandong Institute of Sericulture, Yantai 264001, China; (W.N.)
| | - Dan Wen
- Yantai Engineering Research Center for Plant Stem Cell Targeted Breeding, Shandong Institute of Sericulture, Yantai 264001, China; (W.N.)
| | - Peng Qiao
- Yantai Engineering Research Center for Plant Stem Cell Targeted Breeding, Shandong Institute of Sericulture, Yantai 264001, China; (W.N.)
| | - Hongen Guo
- Yantai Engineering Research Center for Plant Stem Cell Targeted Breeding, Shandong Institute of Sericulture, Yantai 264001, China; (W.N.)
| | - Qinghua Shi
- Stage Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
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Zhao M, Li J, Shi X, Sanaullah Malik M, Quan Y, Guo D, Wang L, Wang S. Effects of exogenous plant regulators on growth and development of "Kyoho" grape under salt alkali stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1274684. [PMID: 38162314 PMCID: PMC10756669 DOI: 10.3389/fpls.2023.1274684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024]
Abstract
Salinity is one of the major abiotic stresses besides drought and cold stress. The application of plant growth regulators (PGRs) is an effective method to mitigate yield losses caused by salinity. However, we investigated the effects of exogenous regulatory substances (γ-aminobutyric acid (GABA), salicylic acid (SA), and brassinolide (BR) on the growth and development of "Kyoho" grapevine under salt stress. The results showed that exogenous regulators GABA, SA, and BR alleviated the inhibition of grape growth by saline stress and regulated the effects of salinity stress on grape fruit development and quality. All three regulators significantly increased fruit set, cross-sectional diameter, weight per unit, and anthocyanin content. In conclusion, this study provides a theoretical basis for grape production practices by using exogenous aminobutyric acid (GABA), salicylic acid (SA), and brassinolide (BR) to mitigate the hazards of salinity stress.
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Affiliation(s)
- Maoxiang Zhao
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
| | - Jiajia Li
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Xiangneng Shi
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Sinochem Agriculture Holdings, Beijing, China
| | - M. Sanaullah Malik
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Quan
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Dinghan Guo
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Lei Wang
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Shiping Wang
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
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Zhang M, Xing Y, Ma J, Zhang Y, Yu J, Wang X, Jia X. Investigation of the response of Platycodongrandiflorus (Jacq.) A. DC to salt stress using combined transcriptomics and metabolomics. BMC PLANT BIOLOGY 2023; 23:589. [PMID: 38001405 PMCID: PMC10675982 DOI: 10.1186/s12870-023-04536-w] [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: 01/26/2023] [Accepted: 10/18/2023] [Indexed: 11/26/2023]
Abstract
BACKGROUND Platycodon grandiflorus (Jacq.) A. DC is a famous traditional Chinese medicine in China and an authentic medicine in Inner Mongolia. It has been traditionally used as an expectorant in cough and also has anti-inflammatory and other pharmacological effects. As a homologous plant of medicine and food, P. grandiflorus is widely planted in Northeast China. Soil salinity isa limiting factor for its cultivation. In this study, we comprehensively described the physiological characteristics of P. grandiflorus and combined transcriptomics and metabolomics to study the response of roots of P. grandiflorus to salt stress. RESULTS Overall, 8,988 differentially expressed genes were activated and significantly altered the metabolic processes. In total, 428 differentially abundant metabolites were affected by salt stress. After moderate and severe salt stress, most of the differentially abundant metabolites were enriched in the L-phenylalanine metabolic pathway. Through the comprehensive analysis of the interaction between key genes and metabolites, the main pathways such as lignin compound biosynthesis and triterpene saponin biosynthesis were completed. The relative content of compounds related to lignin biosynthesis, such as caffeic acid, coniferin, and syringing, increased under salt stress, and the related genes such as PAL, C4H, and the key enzyme gene UGT72E2 were activated to adapt to the salt stress. Platycodon saponin is one of the major triterpene saponins in P. grandiflorus, and Platycodin D is its most abundant major bioactive component. Under severe salt stress, Platycodin D level increased by nearly 1.77-fold compared with the control group. Most of the genes involved insynthetic pathway of Platycodin D, such as HMGCR, GGPS, SE, and LUP, were upregulated under salt stress. CONCLUSION Salt stress led to a decrease in the biomass and affected the activities of antioxidant enzymes and contents of osmotic regulators in the plant. These results provided not only novel insights into the underlying mechanisms of response of P. grandiflorus to salt stress but also a foundation for future studies on the function of genes related to salt tolerance in the triterpenoid saponin biosynthesis pathway.
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Affiliation(s)
- Meixi Zhang
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Yushu Xing
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Jiannan Ma
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Ying Zhang
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Juan Yu
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Xiaoqin Wang
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China.
| | - Xin Jia
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China.
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Gajjar P, Ismail A, Islam T, Darwish AG, Moniruzzaman M, Abuslima E, Dawood AS, El-Saady AM, Tsolova V, El-Kereamy A, Nick P, Sherif SM, Abazinge MD, El-Sharkawy I. Physiological Comparison of Two Salt-Excluder Hybrid Grapevine Rootstocks under Salinity Reveals Different Adaptation Qualities. PLANTS (BASEL, SWITZERLAND) 2023; 12:3247. [PMID: 37765411 PMCID: PMC10535200 DOI: 10.3390/plants12183247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/03/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023]
Abstract
Like other plant stresses, salinity is a central agricultural problem, mainly in arid or semi-arid regions. Therefore, salt-adapted plants have evolved several adaptation strategies to counteract salt-related events, such as photosynthesis inhibition, metabolic toxicity, and reactive oxygen species (ROS) formation. European grapes are usually grafted onto salt-tolerant rootstocks as a cultivation practice to alleviate salinity-dependent damage. In the current study, two grape rootstocks, 140 Ruggeri (RUG) and Millardet et de Grasset 420A (MGT), were utilized to evaluate the diversity of their salinity adaptation strategies. The results showed that RUG is able to maintain higher levels of the photosynthetic pigments (Chl-T, Chl-a, and Chl-b) under salt stress, and hence accumulates higher levels of total soluble sugars (TSS), monosaccharides, and disaccharides compared with the MGT rootstock. Moreover, it was revealed that the RUG rootstock maintains and/or increases the enzymatic activities of catalase, GPX, and SOD under salinity, giving it a more efficient ROS detoxification machinery under stress.
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Affiliation(s)
- Pranavkumar Gajjar
- Center for Viticulture and Small Fruit Research, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, FL 32308, USA; (P.G.); (A.I.); (A.G.D.); (M.M.); (V.T.)
| | - Ahmed Ismail
- Center for Viticulture and Small Fruit Research, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, FL 32308, USA; (P.G.); (A.I.); (A.G.D.); (M.M.); (V.T.)
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA;
- Department of Horticulture, Faculty of Agriculture, Damanhour University, Damanhour 22516, Egypt
| | - Tabibul Islam
- Alson H. Smith Jr. Agricultural Research and Extension Center, School of Plant and Environmental Sciences, Virginia Tech, Winchester, VA 22602, USA; (T.I.); (S.M.S.)
| | - Ahmed G. Darwish
- Center for Viticulture and Small Fruit Research, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, FL 32308, USA; (P.G.); (A.I.); (A.G.D.); (M.M.); (V.T.)
- Department of Biochemistry, Faculty of Agriculture, Minia University, Minia 61519, Egypt
| | - Md Moniruzzaman
- Center for Viticulture and Small Fruit Research, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, FL 32308, USA; (P.G.); (A.I.); (A.G.D.); (M.M.); (V.T.)
| | - Eman Abuslima
- Department of Botany and Microbiology, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt;
| | - Ahmed S. Dawood
- Horticulture Department, Faculty of Agriculture, Al-Azhar University, Cairo 11884, Egypt;
| | | | - Violeta Tsolova
- Center for Viticulture and Small Fruit Research, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, FL 32308, USA; (P.G.); (A.I.); (A.G.D.); (M.M.); (V.T.)
| | - Ashraf El-Kereamy
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA;
| | - Peter Nick
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany;
| | - Sherif M. Sherif
- Alson H. Smith Jr. Agricultural Research and Extension Center, School of Plant and Environmental Sciences, Virginia Tech, Winchester, VA 22602, USA; (T.I.); (S.M.S.)
| | - Michael D. Abazinge
- School of the Environment, Florida A&M University, Tallahassee, FL 32307, USA;
| | - Islam El-Sharkawy
- Center for Viticulture and Small Fruit Research, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, FL 32308, USA; (P.G.); (A.I.); (A.G.D.); (M.M.); (V.T.)
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Zhao J, Shi C, Wang D, Zhu Y, Liu J, Li H, Yang X. Sand Burial, Rather than Salinity or Drought, Is the Main Stress That Limits the Germination Ability of Sophora alopecuroides L. Seed in the Desert Steppe of Yanchi, Ningxia, China. PLANTS (BASEL, SWITZERLAND) 2023; 12:2766. [PMID: 37570921 PMCID: PMC10421362 DOI: 10.3390/plants12152766] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/06/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023]
Abstract
Global change and environmental pollution have reawakened ecologists to the great threat of multi-stress interactions to different growth stages of plants. Sophora alopecuroides L., a dune plant, has been widely studied for its medicinal components and strong salinity tolerance. S. alopecuroides seeds, obtained from the desert steppe of Yanchi, Ningxia, China, were used to analyze the effects of sand burial, salinity, drought, and their interactions on seed germination (germination percentage, germination energy, and germination index). The results showed that sand burial and salinity stress had significant effects on the seed germination ability of S. alopecuroides, and drought stress had no significant effect, but the interaction of the three stresses had a significant effect. Under different drought-stress treatments, the interaction of no sand burial and a certain degree of salinity stress significantly improved the germination ability of S. alopecuroides, and the overall intensity of the effects of the three stresses showed that sand burial > salinity > drought. Considering the germination percentage, germination energy, and germination index of S. alopecuroides under various stress interactions, the treatment of no sand burial × 1% soil saline-alkali content × 18-20% soil water content was adopted to maximize the germination ability of S. alopecuroides. In the desert steppe area of Yanchi, Ningxia, sand burial stress was still the most limiting factor for seed germination of S. alopecuroides, and soil saline-alkali content should be increased moderately, and soil moisture should be ensured to obtain the best germination ability.
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Affiliation(s)
- Jingdong Zhao
- Breeding Base for State Key Lab. of Land Degradation and Ecological Restoration in Northwestern China/Key Lab. of Restoration and Reconstruction of Degraded Ecosystems in Northwestern China of Ministry of Education, Ningxia University, Yinchuan 750021, China
- Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China
- Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing 100091, China
| | - Chaoyi Shi
- Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China
- Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing 100091, China
| | - Danyu Wang
- Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China
- Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing 100091, China
| | - Yuanjun Zhu
- Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China
- Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing 100091, China
| | - Jiankang Liu
- Breeding Base for State Key Lab. of Land Degradation and Ecological Restoration in Northwestern China/Key Lab. of Restoration and Reconstruction of Degraded Ecosystems in Northwestern China of Ministry of Education, Ningxia University, Yinchuan 750021, China
| | - Hanzhi Li
- Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China
- Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing 100091, China
| | - Xiaohui Yang
- Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China
- Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing 100091, China
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Wang B, Wang X, Wang Z, Zhu K, Wu W. Comparative metagenomic analysis reveals rhizosphere microbial community composition and functions help protect grapevines against salt stress. Front Microbiol 2023; 14:1102547. [PMID: 36891384 PMCID: PMC9987714 DOI: 10.3389/fmicb.2023.1102547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 01/31/2023] [Indexed: 02/22/2023] Open
Abstract
Introduction Soil salinization is a serious abiotic stress for grapevines. The rhizosphere microbiota of plants can help counter the negative effects caused by salt stress, but the distinction between rhizosphere microbes of salt-tolerant and salt-sensitive varieties remains unclear. Methods This study employed metagenomic sequencing to explore the rhizosphere microbial community of grapevine rootstocks 101-14 (salt tolerant) and 5BB (salt sensitive) with or without salt stress. Results and Discussion Compared to the control (treated with ddH2O), salt stress induced greater changes in the rhizosphere microbiota of 101-14 than in that of 5BB. The relative abundances of more plant growth-promoting bacteria, including Planctomycetes, Bacteroidetes, Verrucomicrobia, Cyanobacteria, Gemmatimonadetes, Chloroflexi, and Firmicutes, were increased in 101-14 under salt stress, whereas only the relative abundances of four phyla (Actinobacteria, Gemmatimonadetes, Chloroflexi, and Cyanobacteria) were increased in 5BB under salt stress while those of three phyla (Acidobacteria, Verrucomicrobia, and Firmicutes) were depleted. The differentially enriched functions (KEGG level 2) in 101-14 were mainly associated with pathways related to cell motility; folding, sorting, and degradation functions; glycan biosynthesis and metabolism; xenobiotics biodegradation and metabolism; and metabolism of cofactors and vitamins, whereas only the translation function was differentially enriched in 5BB. Under salt stress, the rhizosphere microbiota functions of 101-14 and 5BB differed greatly, especially pathways related to metabolism. Further analysis revealed that pathways associated with sulfur and glutathione metabolism as well as bacterial chemotaxis were uniquely enriched in 101-14 under salt stress and therefore might play vital roles in the mitigation of salt stress on grapevines. In addition, the abundance of various sulfur cycle-related genes, including genes involved in assimilatory sulfate reduction (cysNC, cysQ, sat, and sir), sulfur reduction (fsr), SOX systems (soxB), sulfur oxidation (sqr), organic sulfur transformation (tpa, mdh, gdh, and betC), increased significantly in 101-14 after treatment with NaCl; these genes might mitigate the harmful effects of salt on grapevine. In short, the study findings indicate that both the composition and functions of the rhizosphere microbial community contribute to the enhanced tolerance of some grapevines to salt stress.
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Affiliation(s)
- Bo Wang
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing City, Jiangsu Province, China
| | - Xicheng Wang
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing City, Jiangsu Province, China
| | - Zhuangwei Wang
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing City, Jiangsu Province, China
| | - Kefeng Zhu
- Department of Technology Commercialization, Jiangsu Academy of Agricultural Sciences, Nanjing City, Jiangsu Province, China.,Huaian Herong Ecological Agriculture Co., Ltd, Huaian City, Jiangsu Province, China
| | - Weimin Wu
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing City, Jiangsu Province, China
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