A hypersensitive response-like reaction is involved in hybrid weakness in F₁ plants of the cross Capsicum annuum × Capsicum chinense

• Shiragaki Kumpei

  Graduate School of Life and Environmental Sciences, Osaka Prefecture University

• Yokoi Shuji

  Graduate School of Life and Environmental Sciences, Osaka Prefecture University Education and Research Field, College of Life, Environment, and Advanced Sciences, Osaka Prefecture University Bioeconomy Research Institute, Research Center for the 21st Century, Osaka Prefecture University

• Tezuka Takahiro

  Graduate School of Life and Environmental Sciences, Osaka Prefecture University Education and Research Field, College of Life, Environment, and Advanced Sciences, Osaka Prefecture University

書誌事項

タイトル別名

• A hypersensitive response-like reaction is involved in hybrid weakness in F₁ plants of the cross <i>Capsicum annuum</i> × <i>Capsicum chinense</i>

抄録

Hybrid weakness in Capsicum is characterized by the termination of leaf differentiation after the development of several leaves. F₁ plants in some crosses between Capsicum annuum and Capsicum chinense show weakness; this phenomenon has not been investigated in detail since first reported. In the present study, we characterized morphologically and physiologically hybrid weakness in Capsicum. F₁ plants did not show weaker growth than their parents 20 days after germination (DAG), but at 40 DAG, the hybrid weakness phenotype was evidenced by almost complete arrest of new leaf formation, delayed increase in plant height, and reduced upper internode length. The shoot apical meristem (SAM) of F₁ plants exhibited delayed development and an abnormal structure characterized by a flat shape and the presence of fuzzy cell layers on the surface. These abnormal SAMs of F₁ plants may lead to dwarfism. Dead cells and accumulation of H₂O₂ were visually detected in leaves of F₁ plants, and cell death was considered to be programmed, as it was accompanied by internucleosomal fragmentation of DNA. The expression of immunity marker genes PR1 and PR2 was upregulated in leaves of F₁ plants. These results suggest that a hypersensitive response-like reaction is involved in Capsicum hybrid weakness.

収録刊行物

• Ｂｒｅｅｄｉｎｇ　Ｓｃｉｅｎｃｅ

  Ｂｒｅｅｄｉｎｇ　Ｓｃｉｅｎｃｅ 70 (4), 430-437, 2020

  日本育種学会

キーワード

• reproductive isolation
• interspecific cross
• programmed cell death
• defense response
• pepper

詳細情報

• CRID: 1390848250140918272
• NII論文ID: 130007895837
• NII書誌ID: AA11317194
• DOI: 10.1270/jsbbs.19137
• ISSN: 13473735
• ISSN: 13447610
• NDL書誌ID: 030676749
• Web Site: http://id.ndl.go.jp/bib/030676749
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030676749
• Web Site: https://www.jstage.jst.go.jp/article/jsbbs/70/4/70_19137/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可