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Heat Stress Targeting Individual Organs Reveals the Central Role of Roots and Crowns in Rice Stress Responses
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SYSNO ASEP 0556320 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Heat Stress Targeting Individual Organs Reveals the Central Role of Roots and Crowns in Rice Stress Responses Author(s) Přerostová, Sylva (UEB-Q) RID, ORCID, SAI
Jarošová, Jana (UEB-Q) ORCID
Dobrev, Petre (UEB-Q) RID, ORCID
Hlusková, Lucia (UEB-Q) ORCID
Motyka, Václav (UEB-Q) RID, ORCID
Filepová, Roberta (UEB-Q) SAI
Knirsch, Vojtěch (UEB-Q) ORCID
Gaudinová, Alena (UEB-Q) ORCID
Kieber, J.J. (US)
Vaňková, Radomíra (UEB-Q) RID, ORCIDNumber of authors 10 Article number 799249 Source Title Frontiers in Plant Science. - : Frontiers Research Foundation - ISSN 1664-462X
Roč. 12, JAN 17 (2022)Number of pages 17 s. Language eng - English Country CH - Switzerland Keywords acclimation ; antioxidant enzymes ; cytokinin oxidase/dehydrogenase (CKX) ; gene expression ; heat shock ; jasmonoyl-isoleucine ; Oryza sativa (L.) ; phytohormones OECD category Plant sciences, botany R&D Projects LTAUSA17081 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_019/0000738 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA20-22875S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UEB-Q - RVO:61389030 UT WOS 000749773800001 EID SCOPUS 85123773596 DOI 10.3389/fpls.2021.799249 Annotation Inter-organ communication and the heat stress (HS, 45°C, 6 h) responses of organs exposed and not directly exposed to HS were evaluated in rice (Oryza sativa) by comparing the impact of HS applied either to whole plants, or only to shoots or roots. Whole-plant HS reduced photosynthetic activity (Fv/Fm and QY_Lss), but this effect was alleviated by prior acclimation (37°C, 2 h). Dynamics of HSFA2d, HSP90.2, HSP90.3, and SIG5 expression revealed high protection of crowns and roots. Additionally, HSP26.2 was strongly expressed in leaves. Whole-plant HS increased levels of jasmonic acid (JA) and cytokinin cis-zeatin in leaves, while up-regulating auxin indole-3-acetic acid and down-regulating trans-zeatin in leaves and crowns. Ascorbate peroxidase activity and expression of alternative oxidases (AOX) increased in leaves and crowns. HS targeted to leaves elevated levels of JA in roots, cis-zeatin in crowns, and ascorbate peroxidase activity in crowns and roots. HS targeted to roots increased levels of abscisic acid and auxin in leaves and crowns, cis-zeatin in leaves, and JA in crowns, while reducing trans-zeatin levels. The weaker protection of leaves reflects the growth strategy of rice. HS treatment of individual organs induced changes in phytohormone levels and antioxidant enzyme activity in non-exposed organs, in order to enhance plant stress tolerance. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2023 Electronic address http://doi.org/10.3389/fpls.2021.799249
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