Increasing Fusarium verticillioides resistance in maize by genomics-assisted breeding: Methods, progress, and prospects

IF 6 1区 农林科学 Q1 AGRONOMY Crop Journal Pub Date : 2023-12-01 DOI:10.1016/j.cj.2023.07.004
Yufang Xu , Zhirui Zhang , Ping Lu , Ruiqi Li , Peipei Ma , Jianyu Wu , Tao Li , Huiyong Zhang
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Abstract

Maize (Zea mays L.) is an indispensable crop worldwide for food, feed, and bioenergy production. Fusarium verticillioides (F. verticillioides) is a widely distributed phytopathogen and incites multiple destructive diseases in maize: seedling blight, stalk rot, ear rot, and seed rot. As a soil-, seed-, and airborne pathogen, F. verticillioides can survive in soil or plant residue and systemically infect maize via roots, contaminated seed, silks, or external wounds, posing a severe threat to maize production and quality. Infection triggers complex immune responses: induction of defense-response genes, changes in reactive oxygen species, plant hormone levels and oxylipins, and alterations in secondary metabolites such as flavonoids, phenylpropanoids, phenolic compounds, and benzoxazinoid defense compounds. Breeding resistant maize cultivars is the preferred approach to reducing F. verticillioides infection and mycotoxin contamination. Reliable phenotyping systems are prerequisites for elucidating the genetic structure and molecular mechanism of maize resistance to F. verticillioides. Although many F. verticillioides resistance genes have been identified by genome-wide association study, linkage analysis, bulked-segregant analysis, and various omics technologies, few have been functionally validated and applied in molecular breeding. This review summarizes research progress on the infection cycle of F. verticillioides in maize, phenotyping evaluation systems for F. verticillioides resistance, quantitative trait loci and genes associated with F. verticillioides resistance, and molecular mechanisms underlying maize defense against F. verticillioides, and discusses potential avenues for molecular design breeding to improve maize resistance to F. verticillioides.

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通过基因组辅助育种提高玉米对疣孢镰刀菌的抗性:方法、进展和前景
玉米(Zea mays L.)是全球粮食、饲料和生物能源生产中不可或缺的作物。茎腐镰刀菌(F. verticillioides)是一种广泛分布的植物病原菌,在玉米中引发多种毁灭性病害:苗枯病、茎腐病、穗腐病和籽腐病。作为一种通过土壤、种子和空气传播的病原体,穗霉菌可以在土壤或植物残留物中存活,并通过根系、受污染的种子、蚕丝或外部伤口系统性地感染玉米,对玉米的产量和质量构成严重威胁。感染会引发复杂的免疫反应:诱导防御反应基因,改变活性氧、植物激素水平和氧化脂,改变次生代谢物,如类黄酮、苯丙酮、酚类化合物和苯并恶嗪类防御化合物。培育抗性玉米品种是减少轮纹霉菌感染和霉菌毒素污染的首选方法。可靠的表型系统是阐明玉米对轮枝菌抗性的遗传结构和分子机制的先决条件。虽然通过全基因组关联研究、连锁分析、群体分离分析和各种表型技术,已经发现了许多禾谷轮霉菌抗性基因,但很少有基因得到功能验证并应用于分子育种。本综述总结了禾谷镰刀菌在玉米上的感染周期、禾谷镰刀菌抗性表型评价系统、与禾谷镰刀菌抗性相关的数量性状位点和基因以及玉米防御禾谷镰刀菌的分子机制等方面的研究进展,并探讨了分子设计育种以提高玉米抗禾谷镰刀菌性的潜在途径。
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来源期刊
Crop Journal
Crop Journal Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
9.90
自引率
3.00%
发文量
638
审稿时长
41 days
期刊介绍: The major aims of The Crop Journal are to report recent progresses in crop sciences including crop genetics, breeding, agronomy, crop physiology, germplasm resources, grain chemistry, grain storage and processing, crop management practices, crop biotechnology, and biomathematics. The regular columns of the journal are Original Research Articles, Reviews, and Research Notes. The strict peer-review procedure will guarantee the academic level and raise the reputation of the journal. The readership of the journal is for crop science researchers, students of agricultural colleges and universities, and persons with similar academic levels.
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