مورد إلكتروني
Fine-tuning of the flowering time control in winter barley: the importance of HvOS2 and HvVRN2 in non-inductive conditions
| العنوان: | Fine-tuning of the flowering time control in winter barley: the importance of HvOS2 and HvVRN2 in non-inductive conditions |
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| بيانات النشر: | BioMed Central 2019-03-25 |
| تفاصيل مُضافة: | Ministerio de Economía, Industria y Competitividad (España) Consejo Superior de Investigaciones Científicas (España) Monteagudo Gálvez, Arantxa Igartua Arregui, Ernesto Contreras-Moreira, Bruno Gracia Gimeno, María Pilar Ramos Escribano, Javier Karsaï, Ildikó Casas Cendoya, Ana María |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | [Background] In winter barley plants, vernalization and photoperiod cues have to be integrated to promote flowering. Plant development and expression of different flowering promoter (HvVRN1, HvCO2, PPD-H1, HvFT1, HvFT3) and repressor (HvVRN2, HvCO9 and HvOS2) genes were evaluated in two winter barley varieties under: (1) natural increasing photoperiod, without vernalization, and (2) under short day conditions in three insufficient vernalization treatments. These challenging conditions were chosen to capture non-optimal and natural responses, representative of those experienced in the Mediterranean area. [Results] In absence of vernalization and under increasing photoperiods, HvVRN2 expression increased with day-length, mainly between 12 and 13 h photoperiods in our latitudes. The flowering promoter gene in short days, HvFT3, was only expressed after receiving induction of cold or plant age, which was associated with low transcript levels of HvVRN2 and HvOS2. Under the sub-optimal conditions here described, great differences in development were found between the two winter barley varieties used in the study. Delayed development in ‘Barberousse’ was associated with increased expression levels of HvOS2. Novel variation for HvCO9 and HvOS2 is reported and might explain such differences. [Conclusions] The balance between the expression of flowering promoters and repressor genes regulates the promotion towards flowering or the maintenance of the vegetative state. HvOS2, an ortholog of FLC, appears as a strong candidate to mediate in the vernalization response of barley. Natural variation found would help to exploit the plasticity in development to obtain better-adapted varieties for current and future climate conditions. |
| مصطلحات الفهرس: | Barley, Gene expression, HvCO2, HvFT3, HvOS2, HvVRN1, HvVRN2, Photoperiod, PPD-H1, Vernalization, artículo |
| URL: | Publisher's version info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2013-48756-R info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2016-80967-R |
| الإتاحة: | Open access content. Open access content The Author(s). http://creativecommons.org/licenses/by/4.0 openAccess |
| أرقام أخرى: | CTK oai:digital.csic.es:10261/178965 BMC Plant Biology 19(1): 113 (20199 10.1186/s12870-019-1727-9 1471-2229 30909882 1257715624 |
| المصدر المساهم: | CSIC From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1257715624 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |