Resistance to Anthracnose Rot Disease in <i>Capsicum</i>
2023
Lei Cui | Michiel C. van den Munckhof | Yuling Bai | Roeland E. Voorrips
Pepper (<i>Capsicum</i> spp.) is an important vegetable crop worldwide with high economic and nutritional value. The <i>Capsicum</i> genus comprises more than 30 species, of which <i>C. annuum</i>, <i>C. chinense</i>, <i>C. baccatum</i>, <i>C. frutescens</i>, and <i>C. pubescens</i> are the five domesticated ones. Anthracnose fruit rot, caused by <i>Colletotrichum</i> spp., is one of the most destructive fungal diseases of pepper. In this review, we compiled up-to-date information from 40 publications on anthracnose resistance in <i>Capsicum</i> species. In total, 375 accessions were described as showing different levels of resistance against <i>Colletotrichum</i> spp. These accessions belonged to different species, including <i>C. annuum</i> (160), <i>C. baccatum</i> (86), <i>C. chacoense</i> (4), <i>C. chinense</i> (90), and <i>C. frutescens</i> (16), as well as 19 accessions of which the species were not reported. High levels of resistance were mainly present in <i>C. baccatum</i> and <i>C. chinense</i>. For some of the resistant accessions, resistance genes or quantitative trait loci (QTL) were reported. Using associated molecular markers, we located 31 QTLs and 17 resistance-related genes in the recently published <i>Capsicum</i> genomes, including <i>C. annuum</i> CM334 version 1.6, <i>C. chinense</i> version 1.2, and <i>C. baccatum</i> version 1.2. Our results could be helpful for making use of some reported accessions in the breeding of pepper cultivars with resistance to anthracnose rot disease.
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