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Woodland strawberry axillary bud fate is dictated by a crosstalk of environmental and endogenous factors

Andres, Javier and Caruana, Julie and Liang, Jiahui and Samad, Samia and Monfort, Amparo and Liu, Zhongchi and Hytonen, Timo and Koskela, Elli A. (2021). Woodland strawberry axillary bud fate is dictated by a crosstalk of environmental and endogenous factors. Plant Physiology. 187 , 1221-1234
[Research article]

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Abstract

Plant architecture is defined by fates and positions of meristematic tissues and has direct consequences on yield potential and environmental adaptation of the plant. In strawberries (Fragaria vesca L. and F. x ananassa Duch.), shoot apical meristems can remain vegetative or differentiate into a terminal inflorescence meristem. Strawberry axillary buds (AXBs) are located in leaf axils and can either remain dormant or follow one of the two possible developmental fates. AXBs can either develop into stolons needed for clonal reproduction or into branch crowns (BCs) that can bear their own terminal inflorescences under favorable conditions. Although AXB fate has direct consequences on yield potential and vegetative propagation of strawberries, the regulation of AXB fate has so far remained obscure. We subjected a number of woodland strawberry (F. vesca L.) natural accessions and transgenic genotypes to different environmental conditions and growth regulator treatments to demonstrate that strawberry AXB fate is regulated either by environmental or endogenous factors, depending on the AXB position on the plant. We confirm that the F. vesca GIBBERELLIN20-oxidase4 (FvGA20ox4) gene is indispensable for stolon development and under tight environmental regulation. Moreover, our data show that apical dominance inhibits the outgrowth of the youngest AXB as BCs, although the effect of apical dominance can be overrun by the activity of FvGA20ox4. Finally, we demonstrate that the FvGA20ox4 is photoperiodically regulated via FvSOC1 (F. vesca SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1) at 18 degrees C, but at higher temperature of 22 degrees C an unidentified FvSOC1-independent pathway promotes stolon development.Environmental conditions and apical dominance dictate woodland strawberry plant architecture by regulating axillary bud fate.

Authors/Creators:Andres, Javier and Caruana, Julie and Liang, Jiahui and Samad, Samia and Monfort, Amparo and Liu, Zhongchi and Hytonen, Timo and Koskela, Elli A.
Title:Woodland strawberry axillary bud fate is dictated by a crosstalk of environmental and endogenous factors
Series Name/Journal:Plant Physiology
Year of publishing :2021
Volume:187
Page range:1221-1234
Number of Pages:14
Publisher:OXFORD UNIV PRESS INC
ISSN:0032-0889
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
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
URN:NBN:urn:nbn:se:slu:epsilon-p-114549
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114549
Additional ID:
Type of IDID
DOI10.1093/plphys/kiab421
Web of Science (WoS)000720751600016
ID Code:26280
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Biosystems and Technology (from 130101)
Deposited By: SLUpub Connector
Deposited On:06 Dec 2021 16:25
Metadata Last Modified:06 Dec 2021 16:31

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