Strigolactones positively regulate abscisic acid-dependent heat and cold tolerance in tomato

Chi, Cheng; Xu, Xuechen; Wang, Mengqi; Zhang, Hui; Fang, Pingping; Zhou, Jie; Xia, Xiaojian; Shi, Kai; Zhou, Yanhong; Yu, Jingquan

doi:10.1038/s41438-021-00668-y

Cited by 66 publications

(31 citation statements)

References 65 publications

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“…Apart from their role in drought resistance, the positive role of SLs in the cold and heat stress response is associated with ABA biosynthesis. GR24 5DS application enhanced heat and cold tolerance in tomato, whereas the ABA-deficient mutant compromised the GR24 5DS effects, implying that SL, at least partially in an ABA-dependent manner, allows plants to flexibly acclimate to and overcome these stress conditions ( Chi et al, 2021 ).…”

Section: Crosstalk Between Strigolactones and Other Hormones In Plant...mentioning

confidence: 99%

Biological Functions of Strigolactones and Their Crosstalk With Other Phytohormones

Gao

Yang

et al. 2022

Front. Plant Sci.

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Phytohormones are small chemicals critical for plant development and adaptation to a changing environment. Strigolactones (SLs), carotenoid-derived small signalling molecules and a class of phytohormones, regulate multiple developmental processes and respond to diverse environmental signals. SLs also coordinate adjustments in the balance of resource distribution by strategic modification of the plant development, allowing plants to adapt to nutrient deficiency. Instead of operating independently, SL interplays with abscisic acid, cytokinin, auxin, ethylene, and some other plant phytohormones, forming elaborate signalling networks. Hormone signalling crosstalk in plant development and environmental response may occur in a fully concerted manner or as a cascade of sequential events. In many cases, the exact underlying mechanism is unclear because of the different effects of phytohormones and the varying backgrounds of their actions. In this review, we systematically summarise the synthesis, signal transduction, and biological functions of SLs and further highlight the significance of crosstalk between SLs and other phytohormones during plant development and resistance to ever-changing environments.

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Section: Crosstalk Between Strigolactones and Other Hormones In Plant...mentioning

confidence: 99%

Biological Functions of Strigolactones and Their Crosstalk With Other Phytohormones

Gao

Yang

et al. 2022

Front. Plant Sci.

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“…To insert the PCR product into the pFGC1008-HA vector behind the cauliflower mosaic virus (CaMV) 35S promoter, the product was digested with Asc I and Kpn I. As described previously, CRISPR/Cas9 vectors were constructed and used to generate bag9 mutants [ 38 ]. Using the CRISPR-P web tool ( (accessed on 11 September 2020)), the target sequences (5′-GCTCGCCGTCGCTATTCCTC-3′) were achieved and subsequently introduced into the Bbs I site of the AtU6-sgRNA-AtUBQ-Cas9 vectors following annealing into the double strands.…”

Section: Methodsmentioning

confidence: 99%

BAG9 Confers Thermotolerance by Regulating Cellular Redox Homeostasis and the Stability of Heat Shock Proteins in Solanum lycopersicum

et al. 2022

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The Bcl-2-associated athanogene (BAG) family, a group of co-chaperones that share conservative domains in flora and fauna, is involved in plant growth, development, and stress tolerance. However, the function of tomato BAG genes on thermotolerance remains largely unknown. Herein, we found that the expression of BAG9 was induced during heat stress in tomato plants. Knockout of the BAG9 gene by CRISPR/Cas9 reduced, while its overexpression increased thermotolerance in tomato plants as reflected by the phenotype, photosynthesis rate, and membrane peroxidation. Heat-induced reactive oxygen species and oxidative/oxidized proteins were further increased in bag9 mutants and were normalized in BAG9 overexpressing plants. Furthermore, the activities of antioxidant enzymes, ascorbic acid (AsA)/dehydroascorbic acid (DHA), and reduced glutathione (GSH)/oxidized glutathione (GSSG) were reduced in bag9 mutants and were increased in BAG9 overexpressing plants under heat stress. Additionally, BAG9 interacted with Hsp20 proteins in vitro and in vivo. Accumulation of Hsp proteins induced by heat showed a reduction in bag9 mutants; meanwhile, it was increased in BAG9 overexpressing plants. Thus, BAG9 played a crucial role in response to heat stress by regulating cellular redox homeostasis and the stability of heat shock proteins.

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“…SLs bring noticeable changes in plants such as root and shoot architecture patterning [ 7 ], responses to nutrient (N and P) deficiency [ 7 ], and leaf senescence [ 115 ]. Studies showed that cold and heat stress resulted in higher CCD7 and CCD8 gene transcription in tomatoes suggesting that SLs positively regulate tomato heat and cold tolerance responses [ 116 ].…”

Section: Strigolactones and Abiotic Stressmentioning

confidence: 99%

“…The ccd7 mutant in tomatoes showed increased lateral branches, reduced plant height, and higher stomatal conductance than the wild type. However, then the roots of these plants were treated with GR24 under heat stress, and heat-induced wilting was alleviated in both plants [ 116 ]. Heat stress resulted in a decrease in pigment system (PS) II efficiency, quantum yield, and increased REL was overcome in wild type and ccd mutants.…”

Section: Strigolactones and Abiotic Stressmentioning

confidence: 99%

Strigolactone: An Emerging Growth Regulator for Developing Resilience in Plants

Alvi

Sehar

Fatma

et al. 2022

Plants

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Improving plant resilience to changing environmental conditions is the primary focus of today's scientific research globally. It is essential to find various strategies for the better survival of plants with higher resistance potential to climate change. Strigolactones (SLs) are multifunctional β-carotene derivative molecules that determine a range of plant growth and development aspects, such as root architecture, shoot branching, chlorophyll synthesis, and senescence. SLs facilitate strong defense responses against drought, salinity, heavy metal, nutrient starvation, and heat stress. The SLs trigger other hormonal-responsive pathways and determine plant resilience against stressful environments. This review focuses on the mechanisms regulated by SLs and interaction with other plant hormones to regulate plant developmental processes and SLs’ influence on the mitigation of plant damage under abiotic stresses. A better understanding of the signaling and perception of SLs may lead to the path for the sustainability of plants in the changing environmental scenario. The SLs may be considered as an opening door toward sustainable agriculture.

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Strigolactones positively regulate abscisic acid-dependent heat and cold tolerance in tomato

Cited by 66 publications

References 65 publications

Biological Functions of Strigolactones and Their Crosstalk With Other Phytohormones

Biological Functions of Strigolactones and Their Crosstalk With Other Phytohormones

BAG9 Confers Thermotolerance by Regulating Cellular Redox Homeostasis and the Stability of Heat Shock Proteins in Solanum lycopersicum

Strigolactone: An Emerging Growth Regulator for Developing Resilience in Plants

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