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Multi‑integrated genomic data for passiflora foetida provides insights into genome size evolution and floral development in passiflora

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Molecular Horticulture 2023年第1期3卷 19-38页

作者： Yi Zou Jie Wang Dan Peng Xiaoni Zhang Luke R.Tembrock Jinliang Yang Jianli Zhao Hong Liao Zhiqiang Wu Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyLaboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenChina Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary EcologyInstitute of BiodiversitySchool of Ecology and Environmental ScienceYunnan UniversityKunmingYunnan 650504China College of Agriculture Center for Genomics and BiotechnologyFujian Agriculture and Forestry UniversityFuzhou 350002China Department of Agricultural Biology Colorado State UniversityFort CollinsCO 80523USA Department of Agronomy and Horticulture University of Nebraska-LincolnLincolnNE 68583USA Kunpeng Institute of Modern Agriculture at Foshan Shenzhen BranchGuangdong Laboratory of Lingnan Modern AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518124China

passiflora is a plant genus known for its extremely distinctive and colorful flowers and a wide range of genome size ***,how genome characteristics are related to flower traits among passiflora species remains poorly ***,we assembled a chromosome-scale genome of ***,which belongs to the same subgenus as the commercial passionfruit *** genome of *** is smaller(424.16 Mb)and contains fewer copies of long terminal repeat retrotransposons(LTR-RTs).The disparity in LTR-RTs is one of the main contributors to the differences in genome sizes between these two species and possibly in floral ***,we observed variation in insertion times and copy numbers of LTR-RTs across different transposable element(TE)***,by integrating transcriptomic data from 33 samples(eight floral organs and flower buds at three developmental stages)with phylogenomic and metabolomic data,we conducted an in-depth analysis of the expression,phylogeny,and copy number of MIKC-type MADS-box genes and identified essential biosynthetic genes responsible for flower color and scent from glandular bracts and other floral *** study pinpoints LRT-RTs as an important player in genome size variation in passiflora species and provides insights into future genetic improvement.

关键词： passiflora foetida Genome assembly Transposable elements MADS-box Floral organ

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Foliar Micromorphology of In Vitro-cultured Shoots and Field-grown Plants of passiflora foetida

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Horticultural Plant Journal 2017年第1期3卷 34-40页

作者： Manokari Mani Mahipal Singh Shekhawat Department of Botany Kanchi Mamunivar Centre for Post Graduate Studies Biotechnology Laboratory Department of Plant ScienceMahatma Gandhi Government College

The present report describes the development of quantitative and qualitative foliar micromorphological and architectural features in the field environment which elucidated the adaptation of micropropagated plants of passiflora foetida L. in the natural soil conditions. The field environment(high light intensity in comparison to in vitro culture conditions) promotes the autotrophy through decrease in stomatal index(from 23.2 ± 0.15 to 21.0 ± 0.19), increased vein-islets(from 10.0 ± 0.14 to 15.6 ± 0.24 per square millimeters) and veinlet terminations(from 1.6 ± 0.14 to 5.0 ± 0.20 per square millimeters), and trichome density in P. foetida plantlets. The in vitro and field grown leaves mostly possessed anomocytic and anisocytic types of stomata. Two types of trichomes were observed on the surface of leaves of in vitro as well as field transferred plants of P. foetida: the unicellular hairy trichomes(non-glandular), and the multicellular(glandular) trichomes. The trichomes density was less under in vitro conditions as compared to the in vivo environments. The new leaves formed during the ex vitro rooting stage(in greenhouse) and after transplantation of plantlets to the field exhibited the development of adaptive micromorphological features in micropropagated plants, which enabled them to survive under field conditions.

关键词： passiflora foetida micromorphology micropropagation stomata trichomes

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