Scholarlink

<p><i>Ric</i><i>inus</i><i> com</i><i>munis</i> L., known as castor, is an industrial crop known for its globally high demand and valuable ricinoleic acid oil. It faces challenges as it is commonly cultivated globally under harsh environmental conditions in of arid/semi-arid regions. In Brazil, it is mainly cultivated by smallholder farmers in the northeastern semi-arid region, which has a relevant socioeconomic impact. Heat shock transcription factors (HSFs) represent an important class of heat shock protein (HSP) regulators in plants adapting to abiotic stress conditions. We characterized the <i>RcHSF</i> gene family expression under abiotic stress conditions in different tissues and stages of germination and seedling development, as the most critical phases for crop establishment and productivity. We identified 18 <i>RcHSF</i> genes (3 classes, 10 subclasses) distributed across 7 chromosomes containing cis-elements responsive to abiotic stresses (ABRE, MeJARE, GARE, SARE). Abiotic stresses (mannitol, saline, heat) did not affect total germination but compromised seedling vigor. <i>RcHSFs</i> responded to high and low temperatures during germination and early seedling. <i>RcHSF08</i> (Class-A) was highly expressed under stresses in the early seedling stage, while <i>RcHSF10</i> (Class-C) was induced during early seedling stages in control and all stresses compared to dry seeds. This study highlights <i>RcHSF</i> genes involved in abiotic stress tolerance across different <i>Ricinus communis</i> tissues during germination and early seedling growth, providing a foundation for future functional characterization of HSF genes in <i>Arabidopsis thaliana</i> and identifying promising candidates for <i>R. communis</i> breeding programs.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Molecular Characterization of HSF Genes in Ricinus Communis L.: A Foundation for Breeding Stress-Resilient Genotypes

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月18日

查看全文
  • Isabela Dias Santos,
  • Jair Lucas Oliveira Júnior,
  • Pedro Henrique Oliveira Wenceslau Soares,
  • Paulo Roberto Ribeiro,
  • Valdir Gomes Neto,
  • Renato Delmondez de Castro

摘要

Ricinus communis L., known as castor, is an industrial crop known for its globally high demand and valuable ricinoleic acid oil. It faces challenges as it is commonly cultivated globally under harsh environmental conditions in of arid/semi-arid regions. In Brazil, it is mainly cultivated by smallholder farmers in the northeastern semi-arid region, which has a relevant socioeconomic impact. Heat shock transcription factors (HSFs) represent an important class of heat shock protein (HSP) regulators in plants adapting to abiotic stress conditions. We characterized the RcHSF gene family expression under abiotic stress conditions in different tissues and stages of germination and seedling development, as the most critical phases for crop establishment and productivity. We identified 18 RcHSF genes (3 classes, 10 subclasses) distributed across 7 chromosomes containing cis-elements responsive to abiotic stresses (ABRE, MeJARE, GARE, SARE). Abiotic stresses (mannitol, saline, heat) did not affect total germination but compromised seedling vigor. RcHSFs responded to high and low temperatures during germination and early seedling. RcHSF08 (Class-A) was highly expressed under stresses in the early seedling stage, while RcHSF10 (Class-C) was induced during early seedling stages in control and all stresses compared to dry seeds. This study highlights RcHSF genes involved in abiotic stress tolerance across different Ricinus communis tissues during germination and early seedling growth, providing a foundation for future functional characterization of HSF genes in Arabidopsis thaliana and identifying promising candidates for R. communis breeding programs.