Genome-wide transcriptomic analysis of BR-deficient Micro-Tom reveals correlations between drought stress tolerance and brassinosteroid signaling in tomato

Lee, Jinsu; Shim, Donghwan; Moon, Suyun; Kim, Hye Min; Bae, Wonsil; Kim, Kyung-Hwan; Kim, Yang‐Hoon; Rhee, Sung‐Keun; Hong, Chang Pyo; Hong, Su Young; Lee, Ye-Jin; Sung, Jwakyung; Ryu, Hojin

doi:10.1016/j.plaphy.2018.04.031

Cited by 34 publications

(22 citation statements)

References 54 publications

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“…BR deficiency cotton mutant pag1 resembles drought symptoms [ 25 ]. BR synthesis deficiency mutant Micro-Tom is susceptible to drought [ 26 ]. Different from the directly applied BR to plants, the seed priming with BR has been reported to improve tolerance under stress in later germinated plants.…”

Section: Introductionmentioning

confidence: 99%

Brassinosteroid Priming Improves Peanut Drought Tolerance via Eliminating Inhibition on Genes in Photosynthesis and Hormone Signaling

Huang

Zhang

Zeng

et al. 2020

Genes

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Drought negatively affects the growth and yield of terrestrial crops. Seed priming, pre-exposing seed to a compound, could induce improved tolerance and adaptation to stress in germinated plants. To understand the effects and regulatory mechanism of seed priming with brassinosteroid (BR) on peanut plants, we treated seeds with five BR concentrations and examined dozens of physiological and biochemical features, and transcriptomic changes in leaves under well-watered and drought conditions. We found optimal 0.15 ppm BR priming could reduce inhibitions from drought and increase the yield of peanut, and priming effects are dependent on stage of plant development and duration of drought. BR priming induced fewer differentially expressed genes (DEGs) than no BR priming under well-watered condition. Drought with BR priming reduced the number of DEGs than drought only. These DEGs were enriched in varied gene ontologies and metabolism pathways. Downregulation of DEGs involved in both light perceiving and photosynthesis in leaves is consistent with low parameters of photosynthesis. Optimal BR priming partially rescued the levels of growth promoting auxin and gibberellin which were largely reduced by drought, and increased levels of defense associated abscisic acid and salicylic acid after long-term drought. BR priming induced many DEGs which function as kinase or transcription factor for signal cascade under drought. We proposed BR priming-induced regulatory responses will be memorized and recalled for fast adaptation in later drought stress. These results provide physiological and regulatory bases of effects of seed priming with BR, which can help to guide the framing improvement under drought stress.

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Section: Introductionmentioning

confidence: 99%

Brassinosteroid Priming Improves Peanut Drought Tolerance via Eliminating Inhibition on Genes in Photosynthesis and Hormone Signaling

Huang

Zhang

Zeng

et al. 2020

Genes

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“…In StMSI1-OE and StBMI1-AS lines, we noticed downregulation of several genes coding for auxin efflux carriers (PIN proteins), HD-ZIP TFs, and BR signaling pathway genes (Fig. 7, A and B), which have been shown to affect vascular bundle formation (Mattsson et al, 1999;Sieburth, 1999;Lee et al, 2018).…”

Section: Discussionmentioning

confidence: 95%

PcG Proteins MSI1 and BMI1 Function Upstream of miR156 to Regulate Aerial Tuber Formation in Potato

et al. 2019

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Polycomb Repressive Complexes (PRC1 and PRC2) regulate developmental transitions in plants. AtBMI1, a PRC1 member, represses micro RNA156 (miR156) to trigger the onset of adult phase in Arabidopsis (Arabidopsis thaliana). miR156 overexpression (OE) reduces below-ground tuber yield, but stimulates aerial tubers in potato (Solanum tuberosum ssp andigena) under short-day (SD) photoperiodic conditions. Whether PRC members could govern tuber development through photoperiod-mediated regulation of miR156 is unknown. Here, we investigated the role of two PRC proteins, StMSI1 (PRC2 member) and StBMI1-1, in potato development. In wild-type andigena plants, StMSI1 and miR156 levels increased in stolon, whereas StBMI1-1 decreased under SD conditions. StMSI1-OE and StBMI1-1-antisense (AS) lines produced pleiotropic effects, including altered leaf architecture/compounding and reduced below-ground tuber yield. Notably, these lines showed enhanced miR156 accumulation accompanied by aerial stolons and tubers from axillary nodes, similar to miR156-OE lines. Further, grafting of StMSI1-OE or StBMI1-1-AS on wild-type stock resulted in reduced root biomass and showed increased accumulation of miR156a/b and-c precursors in the roots of wild-type stocks. RNA-sequencing of axillary nodes from StMSI1-OE and StBMI1-1-AS lines revealed downregulation of auxin and brassinosteroid genes, and upregulation of cytokinin transport/signaling genes, from 1,023 differentially expressed genes shared between the two lines. Moreover, we observed downregulation of genes encoding H2A-ubiquitin ligase and StBMI1-1/3, and upregulation of Trithorax group H3K4-methyl-transferases in StMSI1-OE. Chromatin immunoprecipitation-quantitative PCR confirmed H3K27me3-mediated suppression of StBMI1-1/3, and H3K4me3-mediated activation of miR156 in StMSI1-OE plants. In summary, we show that cross talk between histone modifiers regulates miR156 and alters hormonal response during aerial tuber formation in potato under SD conditions.

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“…Brassinosteroids (BRs) are a plant hormone, which support cultivated plants in the growth, development and stress tolerance (Tong andChu, 2018 andPandey et al, 2020). Brassinosteroid is "poly-hydroxylated steroid phyto-hormone" having unique key roles during the early development of seedlings, flowering stage, vascular development and development of roots (Lee et al 2018;Ahanger et al 2020;Setsungnern et al 2020).The tolerance of plants towards stress may depend on the interaction between BRs and other phytohormones including auxin, cytokinins, salicylic acid, and ethylene (Ahanger et al, 2020). It is reported about the promising role of appliedBRs in protecting the environment under stress (Soares et al, 2020).…”

Section: Melatoninmentioning

confidence: 99%

“…It is reported about the promising role of appliedBRs in protecting the environment under stress (Soares et al, 2020). Exogenous applied and endogenous BRs was found to increase the tolerance of tomato plants against different stresses such as salinity (Ahanger et al 2020), drought (Jangid and Dwivedi, 2017, Lee et al, 2018and Nie et al, 2019, low temperature stress (Khan et al, 2019) and for other stressed plants like heat stress on Arabidopsis (Setsungnern et al, 2020), cadmium stress on pepper (Kaya et al, 2020), lead stress on Brassica juncea (Soares et al, 2020) and heat stress on barley (Sadura et al, 2020).Therefore, BRs are plant growth regulators that recognize the promoting the division and stretching of plant cells, vascular differentiationandthe resistance against stressful conditions (Soares et al, 2020).…”

Section: Melatoninmentioning

confidence: 99%

Management of Heat Stress in Tomato Seedlings under Arid and Semi-Arid Regions: A Review

Abdalla¹,

Taha

El-Ramady

et al. 2020

EBSS

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T HE production of protected cultivation of vegetables could be considered as a sustainable solution in arid and semi-arid regions.These regions already suffer from raising temperature andthe global warmingwill aggravate this, whichrepresents a great challenge facing our universe nowadays. Hence, the production of vegetables and tomato under greenhouse system during the high temperatures may be considered a serious problem should be avoided in these arid zonesin summer due to heat stress.The heat stress may cause a lot of troubles for the tomato seedlings in greenhouses in summer starting with the photosynthetic rate, and the metabolism processes in seedlings and in turn the growth and development of these seedlings. Although studies have recognized heat stress on tomato seedlings, research has yet to systematically investigate the effect of heat stress on tomato seedlings in greenhouse in summer under arid and semi-arid regions particularly in developing countries, which their greenhouses have not any climate controllers. Therefore, the management of tomato seedlings may need to address the production problems caused by heat stress in greenhouse conditions particularly in arid and semi-arid zones

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Genome-wide transcriptomic analysis of BR-deficient Micro-Tom reveals correlations between drought stress tolerance and brassinosteroid signaling in tomato

Cited by 34 publications

References 54 publications

Brassinosteroid Priming Improves Peanut Drought Tolerance via Eliminating Inhibition on Genes in Photosynthesis and Hormone Signaling

Brassinosteroid Priming Improves Peanut Drought Tolerance via Eliminating Inhibition on Genes in Photosynthesis and Hormone Signaling

PcG Proteins MSI1 and BMI1 Function Upstream of miR156 to Regulate Aerial Tuber Formation in Potato

Management of Heat Stress in Tomato Seedlings under Arid and Semi-Arid Regions: A Review

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