ArticleFrontiers in plant science2026
Genetic mapping reveals QTLs associated with HLB response determined by
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- DArTseq molecular markers associated with water stress tolerance and size reduction in citrandarins rootstocks.Frontiers in plant science · 2026Article
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Abstract
Introduction: Huanglongbing (HLB) is a devastating disease impacting citrus orchards worldwide. Identifying candidate genes and/or genomic regions that significantly influence plants' response to HLB is essential for breeding programs. Nevertheless, this remains a challenge, especially during the early stages of the citrus-pathogen interaction, when phenotypically distinguishing tolerant genotypes is not trivial. This work focused on identifying genomic regions and candidate genes associated with citrus response to Methods: Quantitative trait loci (QTL) mapping was performed in a citrandarin population (278 individuals) derived from a fullsib cross between susceptible Results: A predominance of markers in a 1:1 ratio was observed, resulting in two maps, one for each parent. The linkage map had 5464 cM (1872 markers) for CS and 4794 cM (1340 markers) for PT. A total of 44 QTLs were mapped: 25 for the CS map (13 for field and 12 for greenhouse conditions), of which 17 were located at gene sites; and 19 were mapped for the PT (nine for field and 10 for greenhouse conditions), of which 16 were located at gene sites. Discussion: Several genes associated with the identified QTLs are involved in stress responses, making them potential targets for further functional validation. These genomic regions and candidate genes provide valuable targets for future incorporation into citrus breeding programs aimed at developing HLB tolerance.
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