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Responses to abiotic and biotic stresses - from the cellular level to fruit development - contributions of the Czech Centre for Experimental Plant Biology.

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Authors

VANKOVÁ Radka BURKETOVÁ Lenka BRZOBOHATÝ Břetislav ČERNÝ Martin HAFIDH Said HEJÁTKO Jan HONYS David HOYEROVÁ Klára JUŘÍČEK M MARTINEC Jan MORAVEC Tomas PEČENKOVÁ T PETRÁŠEK Jan POSPÍŠIL Jiří RETZER Katarzyna ROBERT BOISIVON Helene ŠTORCHOVÁ Helena VANĚK Tomáš ŽÁRSKÝ Viktor

Year of publication 2023
Type Article in Periodical
Magazine / Source Biologia Plantarum
MU Faculty or unit

Central European Institute of Technology

Citation
Web https://bp.ueb.cas.cz/artkey/bpl-202301-0020_responses-to-abiotic-and-biotic-stresses-from-the-cellular-level-to-fruit-development-contributions-of-the.php
Doi http://dx.doi.org/10.32615/bp.2023.028
Keywords apple breeding, exocyst, gametophyte, pathogen, phytohormone, stress tolerance.
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Description The “Centre for Experimental Plant Biology”, a joint project of the Institute of Experimental Botany of the Czech Academy of Sciences and CEITEC (represented by Mendel and Masaryk Universities), focused on elucidating the mechanisms of plant responses to abiotic and biotic stresses and their combinations at the cellular level, in intact plants during vegetative and reproductive stages, and fruit development. The consortium demonstrated the importance of shared research facilities, complementary approaches, and knowledge exchange, addressing demanding questions in plant biology. The consortium made breakthrough in plant-pathogen interactions, including identification of exocyst-syntaxin cooperation in non-host resistance. The results confirmed the fundamental role of phytohormones in stress responses, including negative correlation of leaf bioactive gibberellins with drought stress, and the role of cytokinins in ROS homeostasis, sulphur metabolism, and heat stress responses, including volatile emission. Molecular analyses revealed expansin-mediated cell wall remodelling, brassinosteroid-mediated regulation of root growth through PIN2, the role of ALBA and LARP6C proteins in pollen development under abiotic stress, and heat stress impact on fertilization rate, embryo and seed development. Gene Set Enrichment and RNA-Seq analyses allowed to identify crucial genes involved in the apple scab resistance network. The main results obtained during the five-year project are summarised here.
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