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The effect of stress on plant vascular development and regeneration

Mazumdar, Shamik (2022). The effect of stress on plant vascular development and regeneration. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-979-7
eISBN 978-91-7760-980-3
[Doctoral thesis]

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Abstract

Plants are susceptible to stress due to their lifestyle and as such have evolved multiple adaptive strategies to ensure survival. One of the most remarkable abilities in plants is their competence to regenerate tissues. Particularly, any damage to vascular tissues is healed quickly to continue survival. This thesis aimed to identify the effect of stress on plant vascular development and regeneration using the model plant Arabidopsis thaliana. The thesis shows how abiotic stresses activate abscisic acid (ABA) signaling pathway, which activates VASCULAR RELATED NAC DOMAIN transcription factors to enhance xylem development to mitigate stress (Paper I). Analysis of another phytohormone signaling pathway, brassinosteroid (BR) revealed that it affects both cambium and xylem development. Additionally, both canonical BR signaling and RECEPETOR LIKE PROTEIN 44 (RLP44) associated BR signaling are required for regeneration and to maintain the balance between cambium and xylem development (Paper II). While the regenerative ability benefits plants, it is also used by biotic agents to the detriment of the plants. We identified a gene, ENHANCER OF VISUAL AND GRAFTING 1 (EVG1), that was commonly induced across biotic and abiotic stresses. EVG1 affected vascular development, regeneration, and mutation of the gene caused differential expression of cell wall related genes. The thesis demonstrates how EVG1 is highly stress responsive and potentially acts as a stress signal and mediates developmental changes (Paper III). Overall, this thesis expands our knowledge as to how stress affects vascular development and regeneration.

Authors/Creators:Mazumdar, Shamik
Title:The effect of stress on plant vascular development and regeneration
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2022
Number:2022:52
Number of Pages:89
Publisher:Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-979-7
ISBN for electronic version:978-91-7760-980-3
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
Keywords:Abscisic acid, Brassinosteroid, Cambium, Cell wall, Phloem, Regeneration, Stress, Xylem
URN:NBN:urn:nbn:se:slu:epsilon-p-118859
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118859
ID Code:28871
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Plant Biology and Forest Genetics (until 131231)
Deposited By: SLUpub Connector
Deposited On:16 Sep 2022 09:49
Metadata Last Modified:16 Sep 2022 09:51

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