1
|
Kirova E, Moskova I, Manova V, Koycheva Y, Tsekova Z, Borisova D, Nikolov H, Dimitrov V, Sergiev I, Kocheva K. Exogenous Cytokinin 4PU-30 Modulates the Response of Wheat and Einkorn Seedlings to Ultraviolet B Radiation. PLANTS (BASEL, SWITZERLAND) 2024; 13:1401. [PMID: 38794471 PMCID: PMC11125444 DOI: 10.3390/plants13101401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/15/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024]
Abstract
Abiotic stress is responsible for a significant reduction in crop plant productivity worldwide. Ultraviolet (UV) radiation is a natural component of sunlight and a permanent environmental stimulus. This study investigated the distinct responses of young wheat and einkorn plants to excessive UV-B radiation (180 min at λmax 312 nm) following foliar pretreatment with 1 µM synthetic cytokinin 4PU-30. Results demonstrated that UV radiation significantly amplified hydrogen peroxide levels in both wheat and einkorn, with einkorn exhibiting a more pronounced increase compared to wheat. This elevation indicated the induction of oxidative stress by UV radiation in the two genotypes. Intensified antioxidant enzyme activities and the increased accumulation of typical stress markers and non-enzyme protectants were evidenced. Transcriptional activity of genes encoding the key antioxidant enzymes POX, GST, CAT, and SOD was also investigated to shed some light on their genetic regulation in both wheat and einkorn seedlings. Our results suggested a role for POX1 and POX7 genes in the UV-B tolerance of the two wheat species as well as a cytokinin-stimulated UV-B stress response in einkorn involving the upregulation of the tau subfamily gene GSTU6. Based on all our findings, it could be concluded that 4PU-30 had the potential of alleviating oxidative stress by attenuating the symptoms of superfluous UV-B illumination in the two examined plant species.
Collapse
Affiliation(s)
- Elisaveta Kirova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 21, 1113 Sofia, Bulgaria; (E.K.); (I.M.); (Y.K.); (Z.T.); (I.S.)
| | - Irina Moskova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 21, 1113 Sofia, Bulgaria; (E.K.); (I.M.); (Y.K.); (Z.T.); (I.S.)
| | - Vasilissa Manova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 21, 1113 Sofia, Bulgaria; (E.K.); (I.M.); (Y.K.); (Z.T.); (I.S.)
| | - Yana Koycheva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 21, 1113 Sofia, Bulgaria; (E.K.); (I.M.); (Y.K.); (Z.T.); (I.S.)
| | - Zoia Tsekova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 21, 1113 Sofia, Bulgaria; (E.K.); (I.M.); (Y.K.); (Z.T.); (I.S.)
| | - Denitsa Borisova
- Space Research and Technology Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 1, 1113 Sofia, Bulgaria; (D.B.); (H.N.); (V.D.)
| | - Hristo Nikolov
- Space Research and Technology Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 1, 1113 Sofia, Bulgaria; (D.B.); (H.N.); (V.D.)
| | - Ventzeslav Dimitrov
- Space Research and Technology Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 1, 1113 Sofia, Bulgaria; (D.B.); (H.N.); (V.D.)
| | - Iskren Sergiev
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 21, 1113 Sofia, Bulgaria; (E.K.); (I.M.); (Y.K.); (Z.T.); (I.S.)
| | - Konstantina Kocheva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 21, 1113 Sofia, Bulgaria; (E.K.); (I.M.); (Y.K.); (Z.T.); (I.S.)
| |
Collapse
|
2
|
Zhang J, Chen X, Song Y, Gong Z. Integrative regulatory mechanisms of stomatal movements under changing climate. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:368-393. [PMID: 38319001 DOI: 10.1111/jipb.13611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/04/2024] [Indexed: 02/07/2024]
Abstract
Global climate change-caused drought stress, high temperatures and other extreme weather profoundly impact plant growth and development, restricting sustainable crop production. To cope with various environmental stimuli, plants can optimize the opening and closing of stomata to balance CO2 uptake for photosynthesis and water loss from leaves. Guard cells perceive and integrate various signals to adjust stomatal pores through turgor pressure regulation. Molecular mechanisms and signaling networks underlying the stomatal movements in response to environmental stresses have been extensively studied and elucidated. This review focuses on the molecular mechanisms of stomatal movements mediated by abscisic acid, light, CO2 , reactive oxygen species, pathogens, temperature, and other phytohormones. We discussed the significance of elucidating the integrative mechanisms that regulate stomatal movements in helping design smart crops with enhanced water use efficiency and resilience in a climate-changing world.
Collapse
Affiliation(s)
- Jingbo Zhang
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China
| | - Xuexue Chen
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yajing Song
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China
| | - Zhizhong Gong
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing, 100094, China
- Institute of Life Science and Green Development, School of Life Sciences, Hebei University, Baoding, 071001, China
| |
Collapse
|
3
|
Li L, Zhang X, Ding F, Hou J, Wang J, Luo R, Mao W, Li X, Zhu H, Yang L, Li Y, Hu J. Genome-wide identification of the melon (Cucumis melo L.) response regulator gene family and functional analysis of CmRR6 and CmPRR3 in response to cold stress. JOURNAL OF PLANT PHYSIOLOGY 2024; 292:154160. [PMID: 38147808 DOI: 10.1016/j.jplph.2023.154160] [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: 03/10/2023] [Revised: 12/03/2023] [Accepted: 12/07/2023] [Indexed: 12/28/2023]
Abstract
The response regulator (RR) gene family play crucial roles in cytokinin signal transduction, plant development, and resistance to abiotic stress. However, there are no reports on the identification and functional characterization of RR genes in melon. In this study, a total of 18 CmRRs were identified and classified into type A, type B, and clock PRRs, based on phylogenetic analysis. Most of the CmRRs displayed tissue-specific expression patterns, and some were induced by cold stress according to two RNA-seq datasets. The expression patterns of CmRR2/6/11/15 and CmPRR2/3 under cold treatment were confirmed by qRT-PCR. Subcellular localization assays indicated that CmRR6 and CmPRR3 were primarily localized in the nucleus and chloroplast. Furthermore, when either CmRR6 or CmPRR3 were silenced using tobacco ringspot virus (TRSV), the cold tolerance of the virus-induced gene silencing (VIGS) melon plants were significantly enhanced, as evidenced by measurements of chlorophyll fluorescence, ion leakage, reactive oxygen, proline, and malondialdehyde levels. Additionally, the expression levels of CmCBF1, CmCBF2, and CmCBF3 were significantly increased in CmRR6-silenced and CmPRR3-silenced plants under cold treatment. Our findings suggest that CmRRs contribute to cold stress responses and provide new insights for further pursuing the molecular mechanisms underlying CmRRs-mediated cold tolerance in melon.
Collapse
Affiliation(s)
- Lili Li
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China
| | - Xiuyue Zhang
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China
| | - Fei Ding
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China
| | - Juan Hou
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China; Research Center of Cucurbit Germplasm Enhancement and Utilization of Henan Province, Zhengzhou, 450046, China
| | - Jiyu Wang
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China
| | - Renren Luo
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China
| | - Wenwen Mao
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China; Research Center of Cucurbit Germplasm Enhancement and Utilization of Henan Province, Zhengzhou, 450046, China
| | - Xiang Li
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China; International Joint Laboratory of Henan Horticultural Crop Biology, Pingan Avenue 218, Zhengdong New District, Zhengzhou, 450046, China
| | - Huayu Zhu
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China; International Joint Laboratory of Henan Horticultural Crop Biology, Pingan Avenue 218, Zhengdong New District, Zhengzhou, 450046, China
| | - Luming Yang
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China; International Joint Laboratory of Henan Horticultural Crop Biology, Pingan Avenue 218, Zhengdong New District, Zhengzhou, 450046, China
| | - Ying Li
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China.
| | - Jianbin Hu
- College of Horticulture, Henan Agricultural University, Zhengzhou, 450046, China; Research Center of Cucurbit Germplasm Enhancement and Utilization of Henan Province, Zhengzhou, 450046, China.
| |
Collapse
|
4
|
Zhang L, Zuluaga MYA, Pii Y, Barone A, Amaducci S, Miras-Moreno B, Martinelli E, Bellotti G, Trevisan M, Puglisi E, Lucini L. A Pseudomonas Plant Growth Promoting Rhizobacterium and Arbuscular Mycorrhiza differentially modulate the growth, photosynthetic performance, nutrients allocation, and stress response mechanisms triggered by a mild Zinc and Cadmium stress in tomato. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 337:111873. [PMID: 37739018 DOI: 10.1016/j.plantsci.2023.111873] [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: 08/29/2023] [Revised: 09/14/2023] [Accepted: 09/17/2023] [Indexed: 09/24/2023]
Abstract
This study aimed to assess the effectiveness of plant growth-promoting rhizobacteria (PGPR; Pseudomonas strain So_08) and arbuscular mycorrhizal fungi (AMF; Rhizoglomus irregulare BEG72 and Funneliformis mosseae BEG234) in mitigating the detrimental effects of cadmium (Cd) and zinc (Zn) stress in tomato plants. Plant biomass, root morphology, leaf relative water content, membrane stability, photosynthetic performance, chlorophyll content, and heavy metals (HMs) accumulation were determined. Furthermore, an ionomic profile was conducted to investigate whether microbial inoculants affected the uptake and allocation of macro- and micronutrients. Metabolomics with pathway analysis of both roots and leaves was performed to unravel the mechanisms underlying the differential responses to HMs stress. The findings revealed that the levels of HMs did not significantly affect plant growth parameters; however, they affected membrane stability, photosynthetic performance, nutrient allocation, and chlorophyll content. Cadmium was mainly accumulated in roots, whilst Zn exhibited accumulation in various plant organs. Our findings demonstrate the beneficial effects of PGPR and AMF in mitigating Cd and Zn stress in tomato plants. The microbial inoculations improved physiological parameters and induced differential accumulation of macro- and micronutrients, modulating nutrient uptake balance. These results provide insights into the mechanisms underlying the plant-microbe interactions and highlight the differential modulation of the biosynthetic pathways of secondary metabolites related to oxidative stress response, membrane lipids stability, and phytohormone crosstalk.
Collapse
Affiliation(s)
- Leilei Zhang
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | | | - Youry Pii
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Bolzano, Italy.
| | - Angelica Barone
- Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Stefano Amaducci
- Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Begoña Miras-Moreno
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Erika Martinelli
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Gabriele Bellotti
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Marco Trevisan
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Edoardo Puglisi
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy.
| | - Luigi Lucini
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| |
Collapse
|