Breeding for resistance to bacterial wilt in Solanaceae crops: lessons learned and ways forward for Gboma eggplant (Solanum macrocarpon L.), a traditional African vegetable

IF 1.6 3区 农林科学 Q2 AGRONOMY
Belchrist E. Sossou, Mathieu A. T. Ayenan, Roland Schafleitner, Sikirou Rachidatou, Enoch G. Achigan-Dako
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Abstract

Bacterial wilt (BW) is caused by Ralstonia solanacearum species complex (RSSC) and can lead to severe losses in a wide range of crops, including many traditional African vegetables (TAV). Given the critical role of TAV in African food security, investigations of BW incidence, distribution, and effective breeding strategies are needed to support public and private TAV breeding programs. In this review, we address key questions related to the diversity of BW pathogens, susceptible TAV hosts, distribution, incidence, breeding strategies, sources of resistance, and gaps in the development of resistant TAV varieties in Africa. We also discuss the potential of multiomics integration to enhance our understanding of the host plant defense system against BW in Solanaceae crops. We curated BW strain databases obtained from several online platforms, representing a total of 948 BW strains. Using a refined database, we highlighted the diversity of RSSC and TAV crops affected by RSSC in different regions of Africa. Out of 29 species documented to be affected by BW in Africa, ten are TAV, including widely consumed TAV such as Amaranths and nightshades. In addition, phylotypes I and III are reported to affect TAV, and the incidence can reach up to 72.4% in farmers’ fields. An overview of the first reports revealed that the disease has become a serious threat to TAV in the past decade. Finally, this review proposes a schematic map of possible avenues for successful breeding of BW-resistant TAV using Gboma eggplant as a case study.

Abstract Image

茄科作物抗细菌性枯萎病的育种:非洲传统蔬菜 Gboma 茄子(Solanum macrocarpon L.)的经验教训和前进方向
细菌性枯萎病(BW)是由茄属拉氏菌(Ralstonia solanacearum)复合菌种(RSSC)引起的,可导致包括许多传统非洲蔬菜(TAV)在内的多种作物遭受严重损失。鉴于非洲传统蔬菜在非洲粮食安全中的关键作用,我们需要对BW的发病率、分布和有效的育种策略进行调查,以支持公共和私人的非洲传统蔬菜育种计划。在这篇综述中,我们探讨了与 BW 病原体多样性、易感 TAV 宿主、分布、发病率、育种策略、抗性来源以及非洲抗性 TAV 品种开发方面的差距有关的关键问题。我们还讨论了多组学整合的潜力,以加强我们对茄科作物宿主植物防御系统的了解。我们整理了从多个在线平台获得的 BW 菌株数据库,共包含 948 个 BW 菌株。利用完善的数据库,我们突出了非洲不同地区受 RSSC 影响的 RSSC 和 TAV 作物的多样性。在记录的非洲受 BW 影响的 29 种作物中,有 10 种是 TAV,包括广泛食用的 TAV,如苋菜和夜来香。此外,据报告,噬菌体 I 型和 III 型也会影响 TAV,在农田中的发病率可高达 72.4%。对最初报告的综述显示,在过去十年中,该疾病已成为对 TAV 的严重威胁。最后,本综述以 Gboma 茄子为例,提出了成功培育抗 BW TAV 的可能途径示意图。
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来源期刊
Euphytica
Euphytica 农林科学-农艺学
CiteScore
3.80
自引率
5.30%
发文量
157
审稿时长
4.5 months
期刊介绍: Euphytica is an international journal on theoretical and applied aspects of plant breeding. It publishes critical reviews and papers on the results of original research related to plant breeding. The integration of modern and traditional plant breeding is a growing field of research using transgenic crop plants and/or marker assisted breeding in combination with traditional breeding tools. The content should cover the interests of researchers directly or indirectly involved in plant breeding, at universities, breeding institutes, seed industries, plant biotech companies and industries using plant raw materials, and promote stability, adaptability and sustainability in agriculture and agro-industries.
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