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Characterization of Environmental Effects on Flowering and Plant Architecture in an Everbearing Strawberry F1-Hybrid by Meristem Dissection and Gene Expression Analysis

Samad, Samia and Rivero, Rodmar and Kalyandurg, Pruthvi Balachandra and Vetukuri, Ramesh and Heide, Ola M. and Sonsteby, Anita and Khalil, Sammar (2022). Characterization of Environmental Effects on Flowering and Plant Architecture in an Everbearing Strawberry F1-Hybrid by Meristem Dissection and Gene Expression Analysis. Horticulturae. 8 :7 , 626
[Research article]

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Abstract

Floral transition in the cultivated everbearing strawberry is a hot topic because these genotypes flower perpetually and are difficult to maintain in a non-flowering state. However, it has rarely been studied using morphogenetic and molecular analyses simultaneously. We therefore examined the morphogenetic effects and the activation of genes involved in floral induction and initiation in seedlings of an everbearing F1-hybrid. Seedlings were grown at 12, 19, and 26 degrees C under 10 h SD and 20 h LD conditions. We observed a strong environmental influence on meristem development and a FLOWERING LOCUS T1 (FaFT1)-SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (FaSOC1) pathway similar to that in the everbearing woodland strawberry. The everbearing cultivar showed typical features of a quantitative LD plant, flowering earlier under LD than SD conditions at all temperatures. We also found that floral induction is facilitated by FaFT1 upregulation under LD conditions, while FaSOC1 upregulation in the apex leads to photoperiod-independent floral initiation. Moreover, we confirmed the strawberry meristem identity gene FaFUL can also be used as an early indicator of floral initiation in EB cultivars. This study also highlights the advantages of seed-propagated F1-hybrids in genetic studies, namely that they are genetically identical and not biased by a previous flowering history.

Authors/Creators:Samad, Samia and Rivero, Rodmar and Kalyandurg, Pruthvi Balachandra and Vetukuri, Ramesh and Heide, Ola M. and Sonsteby, Anita and Khalil, Sammar
Title:Characterization of Environmental Effects on Flowering and Plant Architecture in an Everbearing Strawberry F1-Hybrid by Meristem Dissection and Gene Expression Analysis
Series Name/Journal:Horticulturae
Year of publishing :2022
Volume:8
Number:7
Article number:626
Number of Pages:17
Publisher:MDPI
Associated Programs and Other Stakeholders:Z - SLU - Library > Odla mera
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 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
Keywords:everbearing strawberry, floral induction, floral initiation, flowering, Fragaria x ananassa Duch, photoperiod, temperature
URN:NBN:urn:nbn:se:slu:epsilon-p-118602
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118602
Additional ID:
Type of IDID
DOI10.3390/horticulturae8070626
Web of Science (WoS)000832304500001
ID Code:28750
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Biosystems and Technology (from 130101)
(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:02 Sep 2022 11:28
Metadata Last Modified:03 Sep 2022 04:02

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