Improvement of preharvest sprouting resistance with MOTHER OF FT AND TFL 1 + mutated ABA 8'-hydroxylase in white-seeded durum wheat.

IF 2 4区农林科学 Q2 AGRONOMY Breeding Science Pub Date : 2022-12-01 DOI:10.1270/jsbbs.22018

Yusuke Ban, Keita Kato, Miwako Ito, Mikiko Yanaka, Kanenori Takata

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Abstract

Improvement of preharvest sprouting (PHS) resistance is an important objective in the breeding of durum wheat (Triticum turgidum ssp. durum (Desf.) Husn.) in Japan, where the harvest timing overlaps with the rainy season. In a previous study, we showed that an R-gene associated with red seed color was the most effective at promoting PHS resistance in durum wheat. However, red-seeded durum wheat is not popular because it discolors pasta. Here, to improve PHS resistance without the R-gene, we introduced a PHS resistance allele of MOTHER OF FT AND TFL 1 (MFT) and a mutated ABA 8'-hydroxylase (ABA8'OH1-A), which is involved in abscisic acid (ABA) catabolism, singly or together into white-seeded durum wheat. The introduction of both genes reliably and stably improved PHS resistance under all tested conditions. Modification of ABA catabolism might be an effective way to improve PHS resistance in durum wheat. Our findings will contribute to improved PHS resistance in breeding for white-seeded durum wheat.

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FT母和tfl1 +突变ABA 8′-羟化酶提高白粒硬粒小麦采前抗性

提高小麦采前发芽抗性是硬粒小麦育种的重要目标。硬质(Desf)。在日本，收获时间与雨季重叠。在之前的研究中，我们发现与红色种子颜色相关的r基因在促进硬粒小麦对小灵通的抗性方面最有效。然而，红籽硬粒小麦不受欢迎，因为它会使意大利面变色。为了提高没有r基因的白粒硬粒小麦对小灵通的抗性，我们将FT和TFL 1 (MFT)的母亲抗小灵通等位基因和ABA8′-羟化酶(aba8′oh1 - a)单独或共同引入白粒硬粒小麦。在所有测试条件下，这两个基因的引入都可靠而稳定地提高了小灵通的抗性。调控ABA的分解代谢可能是提高硬粒小麦对小灵通抗性的有效途径。研究结果将有助于提高白粒硬粒小麦的抗性。

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来源期刊

Breeding Science 农林科学-农艺学

CiteScore

4.90

自引率

4.20%

发文量

审稿时长

1.5 months

期刊介绍： Breeding Science is published by the Japanese Society of Breeding. Breeding Science publishes research papers, notes and reviews related to breeding. Research Papers are standard original articles. Notes report new cultivars, breeding lines, germplasms, genetic stocks, mapping populations, database, software, and techniques significant and useful for breeding. Reviews summarize recent and historical events related breeding. Manuscripts should be submitted by corresponding author. Corresponding author must have obtained permission from all authors prior to submission. Correspondence, proofs, and charges of excess page and color figures should be handled by the corresponding author.