Plant Diversity 2017, 39(2) 104-110 DOI:   http://dx.doi.org/10.1016/j.pld.2017.01.004  ISSN: 2096-2703 CN: 53-1233

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Keywords
Rose

Continuous flowering

Model woody plant

Genetics

Bulk-segregation analysis

Genome-wide prediction
Authors
Xue Dong a
Xiaodong Jiang a
Guoqiang Kuang b
Qingbo Wang b
Micai Zhong a
Dongmin Jin a
Jinyong Hu a*
PubMed
Article by Xue Dong a
Article by Xiaodong Jiang a
Article by Guoqiang Kuang b
Article by Qingbo Wang b
Article by Micai Zhong a
Article by Dongmin Jin a
Article by Jinyong Hu a*
Article by

Genetic control of flowering time in woody plants: Roses as an emerging model

 Xue Dong a, Xiaodong Jiang a, Guoqiang Kuang b, Qingbo Wang b, Micai Zhong a, Dongmin Jin a, Jinyong Hu a*

a
Group of Plant Molecular Genetics and Adaptation, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese
Academy of Sciences. Lanhei Road 132, Heilongtan, Kunming 650201, Yunnan Province, PR China
b
Second High School, Rongcheng 264309, Shandong Province, PR China

Abstract


Genetic control of the timing of flowering in woody plants is complex and has yet to be adequately
investigated due to their long life-cycle and difficulties in genetic modification. Studies in Populus, one of
the best woody plant models, have revealed a highly conserved genetic network for flowering timing in
annuals. However, traits like continuous flowering cannot be addressed with Populus. Roses and
strawberries have relatively small, diploid genomes and feature enormous natural variation. With the
development of new genetic populations and genomic tools, roses and strawberries have become good
models for studying the molecular mechanisms underpinning the regulation of flowering in woody
plants. Here, we review findings on the molecular and genetic factors controlling continuous flowering in
roses and woodland strawberries. Natural variation at TFL1 orthologous genes in both roses and
strawberries seems be the key plausible factor that regulates continuous flowering. However, recent
efforts suggest that a two-recessiveloci model may explain the controlling of continuous flowering in
roses. We propose that epigenetic factors, including non-coding RNAs or chromatin-related factors,
might also play a role. Insights into the genetic control of flowering time variation in roses should benefit
the development of new germplasm for woody crops and shed light on the molecular genetic bases for
the production and maintenance of plant biodiversity.

Keywords Rose  
Continuous flowering
  
Model woody plant
  
Genetics
  
Bulk-segregation analysis
  
Genome-wide prediction
  
Received 2016-08-04 Revised 2017-01-25 Online:  
DOI: http://dx.doi.org/10.1016/j.pld.2017.01.004
Fund: Work in the Hu lab is supported by grants from the Chinese Academy of Sciences under the “Hundreds of Talents” plan and a grant fromthe
“Yunnan Recruitment Program of Experts in Sciences”. No conflict of interest declared.
Corresponding Authors: E-mail address: hujinyong@mail.kib.ac.cn (J. Hu).
Email: hujinyong@mail.kib.ac.cn (J. Hu).
About author:

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