Physiological and transcriptome analyses provide new insights into the mechanism mediating the enhanced tolerance of melatonin-treated rhododendron plants to heat stress

Xu, Yan-Xia; Zhang, Jing; Wan, Ziyun; Huang, Sheng‐Chieh; Di, Hongshuang; He, Ying; Jin, Shuai

doi:10.1016/j.jia.2023.07.005

Cited by 12 publications

(6 citation statements)

References 47 publications

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“…Exogenous application of melatonin or accumulation of endogenous melatonin can mitigate damage caused by biotic or abiotic stresses [52], such as high temperature [53], strong light [54], and salt [55]. Recently, we reported that exogenous melatonin can improve the heat tolerance of Rhododendron [29]. Photosynthesis is highly sensitive to heat stress.…”

Section: Discussionmentioning

confidence: 99%

“…However, these genes were strongly regulated under heat stress. Melatonin (N-acetyl-5-methoxypteramine, MT) is an important exogenous growth regulator in plants that mitigates the deleterious effects of various stresses [28,29]. We found that 10 genes were differentially expressed after exogenous application of melatonin under heat stress, compared with their respective transcript levels in melatonin-free rhododendron plants.…”

Section: Transcriptional Profiles Of Rshsfs Under Abiotic Stressesmentioning

confidence: 95%

“…For the drought treatment, irrigation was withheld for 10 days, and samples were taken at 0 h, 4 h, 12 h and 240 h of treatment. The methods of heat and melatonin treatment were as described in our previous report [29].…”

Section: Plant Materials and Treatmentsmentioning

confidence: 99%

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A Genome-Wide Analysis and Expression Profile of Heat Shock Transcription Factor (Hsf) Gene Family in Rhododendron simsii

Xu,

Jin,

et al. 2023

Plants

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Heat shock transcription factors are key players in a number of transcriptional regulatory pathways that function during plant growth and development. However, their mode of action in Rhododendron simsii is still unclear. In this study, 22 RsHsf genes were identified from genomic data of R. simsii. The 22 genes were randomly distributed on 12 chromosomes, and were divided into three major groups according to their phylogenetic relationships. The structures and conserved motifs were predicted for the 22 genes. Analysis of cis-acting elements revealed stress-responsive and phytohormone-responsive elements in the gene promoter regions, but the types and number varied among the different groups of genes. Transcriptional profile analyses revealed that RsHsfs were expressed in a tissue-specific manner, with particularly high transcript levels in the roots. The transcriptional profiles under abiotic stress were detected by qRT-PCR, and the results further validated the critical function of RsHsfs. This study provides basic information about RsHsf family in R. simsii, and paves the way for further research to clarify their precise roles and to breed new stress-tolerant varieties.

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Section: Discussionmentioning

confidence: 99%

Section: Transcriptional Profiles Of Rshsfs Under Abiotic Stressesmentioning

confidence: 95%

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A Genome-Wide Analysis and Expression Profile of Heat Shock Transcription Factor (Hsf) Gene Family in Rhododendron simsii

Xu,

Jin,

et al. 2023

Plants

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“…Response mechanisms are a promising research area, which include morphological, physiological, biochemical, and molecular mechanisms (e.g., [17,29,30,159]). Research into the plant response to heat stress has included how to reduce the stomatal number and their conductance; how to increase the plant root system; how to decrease leaf folds, curls, and leaf area; and how to reduce water loss via evapotranspiration.…”

Section: Mechanisms Of the Plant Response To Heat Stressmentioning

confidence: 99%

“…There is an urgent need to understand how genes (genomics), proteins (proteomics), ions (ionomics), metabolites (metabolomics), transcripts (transcriptomics), and phenotypes (phenomics) are related to the stress of concern so that heat-stress-tolerant crop varieties can be developed [129]. Materials like melatonin, which can promote the photosynthetic process, improve enzyme activities, and increase the production of ATP, can support heat-stressed plants [159]. The harmful effects of heat stress on plants can also be alleviated by applying certain elements (e.g., Ca, Se, and Si), materials, and plant-growth-promoting rhizobacteria (PGPR) [160,161].…”

Section: Mechanisms Of the Plant Response To Heat Stressmentioning

confidence: 99%

Nano-Food Farming Approaches to Mitigate Heat Stress under Ongoing Climate Change: A Review

El-Ramady,

Prokisch,

El-Mahrouk

et al. 2024

Agriculture

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Increased heat stress is a common feature of global climate change and can cause adverse impacts on crops from germination through maturation and harvest. This review focuses on the impacts of extreme heat (>35 °C) on plants and their physiology and how they affect food and water security. The emphasis is on what can be done to minimize the negative effects of heat stress, which includes the application of various materials and approaches. Nano-farming is highlighted as one promising approach. Heat is often combined with drought, salinity, and other stresses, which together affect the whole agroecosystem, including soil, plants, water, and farm animals, leading to serious implications for food and water resources. Indeed, there is no single remedy or approach that can overcome such grand issues. However, nano-farming can be part of an adaptation strategy. More studies are needed to verify the potential benefits of nanomaterials but also to investigate any negative side-effects, particularly under the intensive application of nanomaterials, and what problems this might create, including potential nanotoxicity.

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Rhododendron L.: Diversity, Distribution, Taxonomy, Conservation, and Improvement Strategies

Kumar,

Anju,

Singh

et al. 2024

Biotechnological Approaches for Sustaining Forest Trees and Their Products

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Physiological and transcriptome analyses provide new insights into the mechanism mediating the enhanced tolerance of melatonin-treated rhododendron plants to heat stress

Cited by 12 publications

References 47 publications

A Genome-Wide Analysis and Expression Profile of Heat Shock Transcription Factor (Hsf) Gene Family in Rhododendron simsii

A Genome-Wide Analysis and Expression Profile of Heat Shock Transcription Factor (Hsf) Gene Family in Rhododendron simsii

Nano-Food Farming Approaches to Mitigate Heat Stress under Ongoing Climate Change: A Review

Rhododendron L.: Diversity, Distribution, Taxonomy, Conservation, and Improvement Strategies

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