Towards Understanding Aspects of Plant Development in Horticultural Crops

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Developmental Physiology, Biochemistry, and Molecular Biology".

Deadline for manuscript submissions: closed (18 November 2022) | Viewed by 2644

Special Issue Editor


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Guest Editor
Department of Agricultural Sciences, University of Helsinki, 00790 Helsinki, Finland
Interests: strawberry; flowering; vegetative development; plant architecture; photoperiodism; temperature; genetics; molecular genetics; agricultural biotechnology

Special Issue Information

Dear Colleagues,

Understanding the genetics regulating different aspects of plant development is a prerequisite for improving the yield and other important characteristics of horticultural crops. In many crops, the environmental conditions, especially photoperiod and temperature, have major effects on generative plant development, i.e., floral induction and inflorescence development. On the other hand, environmental conditions also shape the vegetative characteristics of plants by regulating the timing of vegetative growth. A complicating factor in studying photoperiodic and temperature responses related to plant development is the possible interaction between the environmental variables—for example, a plant that appears to flower exclusively under short days at intermediate temperature may behave as a day-neutral plant at a lower temperature. Careful experimental design is required for acquiring interpretable results on plant environmental responses.

Our Special Issue entitled “Toward Understanding Aspects of Plant Development in Horticultural Crops” is open for manuscripts that deal with different aspects of genetic regulation of plant development, especially plant responses to environmental conditions. We welcome studies conducted under either a controlled or field environment, as long as the experimental design allows for estimating the effect of environmental conditions.

Dr. Elli Koskela
Guest Editor

Manuscript Submission Information

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Keywords

  • plant development
  • flowering
  • vegetative development
  • plant architecture
  • environmental responses
  • genetics

Published Papers (1 paper)

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Research

17 pages, 2914 KiB  
Article
Characterization of Environmental Effects on Flowering and Plant Architecture in an Everbearing Strawberry F1-Hybrid by Meristem Dissection and Gene Expression Analysis
by Samia Samad, Rodmar Rivero, Pruthvi Balachandra Kalyandurg, Ramesh Raju Vetukuri, Ola M. Heide, Anita Sønsteby and Sammar Khalil
Horticulturae 2022, 8(7), 626; https://doi.org/10.3390/horticulturae8070626 - 11 Jul 2022
Cited by 3 | Viewed by 2230
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 [...] Read more.
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 °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. Full article
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