Scholarlink

Key message <p><b>Hessian fly resistance in the spring barley variety ‘Golf’ is controlled by a new gene located in the terminal region of the short arm of chromosome 4 </b><Emphasis Type="BoldItalic">H</Emphasis><b>.</b></p> Abstract <p>Hessian fly (HF) is a devastating pest of cereal crops around the world and can cause significant economic losses. However, the genetic basis of HF resistance in barley is poorly understood. In this study, 219 recombinant inbred lines (RILs), derived from a cross between the HF-resistant variety ‘Golf’ and the susceptible line ‘95SR316A,’ were used to investigate and map HF resistance in ‘Golf.’ A total of 122 susceptible and 97 resistant lines were identified and suggested that HF resistance is controlled by a single gene. Genotyping the RIL population with the barley 50&#xa0;k SNP array and molecular mapping indicated that the HF resistance gene in ‘Golf’ is located in the terminal region of the short arm of chromosome 4<i>H</i>. Based on the associated markers and the recombinants, a 1.76-Mb genomic interval carrying a cluster of nucleotide-binding leucine-rich repeat (NLR) genes was identified. The region overlapped with the previously identified resistance gene <i>HvRHF1</i> in the barley variety ‘Minerva.’ The HF resistance in ‘Minerva’ and ‘Golf’ was evaluated with seven HF biotypes, and the results indicated that while both the genotypes exhibited similar responses to <i>vH13</i>, <i>D</i>, <i>L</i>, <i>C</i> and GP biotypes, they exhibited different responses to biotypes <i>B</i> and <i>O</i>, thus suggesting that the HF resistance in ‘Golf’ may be controlled by a distinct resistance gene or allele. This research identifies a new and first gene showing HF resistance at elevated temperature named <i>HvRHF3</i> and provides useful information for improving barley HF resistance and other research.</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

Identification and molecular mapping of a new Hessian fly resistance gene in the spring barley variety ‘Golf’

  • 期刊论文

  • 发表日期：

    2026年4月16日

查看全文
  • Subhashree Subramanyam,
  • Demeke B. Mewa,
  • Rachel D. Flynn,
  • Jill A. Nemacheck,
  • Harold E. Bockelman,
  • Patrick M. Hayes,
  • Dongying Gao

摘要

Key message

Hessian fly resistance in the spring barley variety ‘Golf’ is controlled by a new gene located in the terminal region of the short arm of chromosome 4 H.

Abstract

Hessian fly (HF) is a devastating pest of cereal crops around the world and can cause significant economic losses. However, the genetic basis of HF resistance in barley is poorly understood. In this study, 219 recombinant inbred lines (RILs), derived from a cross between the HF-resistant variety ‘Golf’ and the susceptible line ‘95SR316A,’ were used to investigate and map HF resistance in ‘Golf.’ A total of 122 susceptible and 97 resistant lines were identified and suggested that HF resistance is controlled by a single gene. Genotyping the RIL population with the barley 50 k SNP array and molecular mapping indicated that the HF resistance gene in ‘Golf’ is located in the terminal region of the short arm of chromosome 4H. Based on the associated markers and the recombinants, a 1.76-Mb genomic interval carrying a cluster of nucleotide-binding leucine-rich repeat (NLR) genes was identified. The region overlapped with the previously identified resistance gene HvRHF1 in the barley variety ‘Minerva.’ The HF resistance in ‘Minerva’ and ‘Golf’ was evaluated with seven HF biotypes, and the results indicated that while both the genotypes exhibited similar responses to vH13, D, L, C and GP biotypes, they exhibited different responses to biotypes B and O, thus suggesting that the HF resistance in ‘Golf’ may be controlled by a distinct resistance gene or allele. This research identifies a new and first gene showing HF resistance at elevated temperature named HvRHF3 and provides useful information for improving barley HF resistance and other research.