First Report of <i>Hippeastrum mosaic virus</i> in <i>Hippeastrum</i> spp. in Mainland China

Xu, Xiu-Xiu; Tang, Wei; Gao, Rui; Yang, Siwen; Li, F.; Sun, Hangjun; Lu, Xiuyun

doi:10.1094/pdis-08-16-1109-pdn

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…Nevertheless, despite the benefits discussed above, this perennial flowering plant has yet to reach its full potential and has even declined in diversity in recent years. Although the development of hybrid breeding and cultivation has led to large cultivar variations, the combined effects of several biotic and abiotic factors 11 , 12 as well as confusion over the taxonomy, phylogenetic relationships, and natural resources of this important plant mean that its genetic background still remains poorly understood. An advisable resource-based national development strategy has not been initiated to date.…”

Section: Introductionmentioning

confidence: 99%

Revealing the complex genetic structure of cultivated amaryllis (Hippeastrum hybridum) using transcriptome-derived microsatellite markers

Wang¹,

Chen²,

et al. 2018

Sci Rep

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Although amaryllis (Hippeastrum hybridum) plants are commonly used in physiological and ecological research, the extent of their genomic and genetic resources remains limited. The development of molecular markers is therefore of great importance to accelerate genetic improvements in Hippeastrum species. In this study, a total of 269 unique genes were defined that might regulate the flower spathe development of amaryllis. In addition, 2000 simple sequence repeats (SSRs) were detected based on 171,462 de novo assembled unigenes from transcriptome data, and 66,4091 single nucleotide polymorphisms (SNPs) were also detected as putative molecular markers. Twenty-one SSR markers were screened to evaluate the genetic diversity and population structure of 104 amaryllis accessions. A total of 98 SSR loci were amplified for all accessions. The results reveal that Nei’s gene diversity (H) values of these markers ranged between 0.055 and 0.394, whereas the average values of Shannon’s Information index (I) ranged between 0.172 and 0.567. Genetic tree analysis further demonstrates that all accessions can be grouped into three main clusters, which can be further divided into two subgroups. STRUCTURE-based analysis revealed that the highest ΔK values were observed when K = 5, K = 6, K = 7 and K = 8. The results of this study enable large-scale transcriptomics and classification of Hippeastrum genetic polymorphisms and will be useful in the future for resource conservation and production.

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Section: Introductionmentioning

confidence: 99%