Universität zu Köln

Zhou, Yanhao, Gan, Xiangchao ORCID: 0000-0001-6398-5191, de la Torre, Natanael Vinegra ORCID: 0000-0003-3773-6014, Neumann, Ulla and Albani, Maria C. ORCID: 0000-0002-8215-020X (2021). Beyond flowering time: diverse roles of an APETALA2-like transcription factor in shoot architecture and perennial traits. New Phytol., 229 (1). S. 444 - 460. HOBOKEN: WILEY. ISSN 1469-8137

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Abstract

Polycarpic perennials maintain vegetative growth after flowering.PERPETUAL FLOWERING 1(PEP1), the orthologue ofFLOWERING LOCUS C(FLC) inArabis alpinaregulates flowering and contributes to polycarpy in a vernalisation-dependent pathway.pep1mutants do not require vernalisation to flower and have reduced return to vegetative growth as all of their axillary branches become reproductive. To identify additional genes that regulate flowering and contribute to perennial traits we performed an enhancer screen ofpep1. Using mapping-by-sequencing, we cloned a mutant (enhancer of pep1-055,eop055), performed transcriptome analysis and physiologically characterised the role it plays on perennial traits in an introgression line carrying theeop055mutation and a functionalPEP1wild-type allele. eop055flowers earlier thanpep1and carries a lesion in theA. alpinaorthologue of theAPETALA2(AP2)-like gene,TARGET OF EAT2(AaTOE2). AaTOE2 is a floral repressor and acts upstream of SQUAMOSA PROMOTER-BINDING PROTEIN-LIKE 5 (AaSPL5). In the wild-type background, which requires cold treatment to flower, AaTOE2 regulates the age-dependent response to vernalisation. In addition, AaTOE2 ensures the maintenance of vegetative growth by delaying axillary meristem initiation and repressing flowering of axillary buds before and during cold exposure. We conclude that AaTOE2 is instrumental in fine tuning different developmental traits in the perennial life cycle ofA. alpina.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zhou, Yanhao UNSPECIFIED UNSPECIFIED UNSPECIFIED Gan, Xiangchao UNSPECIFIED orcid.org/0000-0001-6398-5191 UNSPECIFIED de la Torre, Natanael Vinegra UNSPECIFIED orcid.org/0000-0003-3773-6014 UNSPECIFIED Neumann, Ulla UNSPECIFIED UNSPECIFIED UNSPECIFIED Albani, Maria C. UNSPECIFIED orcid.org/0000-0002-8215-020X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-321984
DOI:	10.1111/nph.16839
Journal or Publication Title:	New Phytol.
Volume:	229
Number:	1
Page Range:	S. 444 - 460
Date:	2021
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1469-8137
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Biology > Botanical Institute
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language AGE-DEPENDENT RESPONSE; FLORAL ORGAN IDENTITY; MOLECULAR-BASIS; READ ALIGNMENT; BOX GENES; CLASS-I; ARABIDOPSIS; VERNALIZATION; GROWTH; MICRORNA Multiple languages Plant Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/32198