A non-duplicated magnoliid genome

Li, Zhen; Peer, Yves Van de

doi:10.1038/s41477-021-00989-9

Cited by 3 publications

(3 citation statements)

References 16 publications

(19 reference statements)

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“…The clade of magnoliids comprises approximately 9000 species, accounting for approximately 3% of the species in angiosperms and includes many economically important species as sources of fruits, medicine, spices, and perfumes. The classification and phylogenetic position of magnoliids in mesangiosperms has been a long-lasting debate (Li et al, 2019;Li & Van de Peer, 2021;One Thousand Plant Transcriptomes, 2019). Mesangiosperms include five lineages, namely monocots, eudicots, magnoliids, Chloranthales, and Ceratophyllales (APG IV, 2016).…”

Section: Introductionmentioning

confidence: 99%

The Saururus chinensis genome provides insights into the evolution of pollination strategies and herbaceousness in magnoliids

Xue

et al. 2023

The Plant Journal

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Saururus chinensis, an herbaceous magnoliid without perianth, represents a clade of early-diverging angiosperms that have gone through woodiness-herbaceousness transition and pollination obstacles: the characteristic white leaves underneath inflorescence during flowering time are considered to be a substitute for perianth to attract insect pollinators. Here, using the newly sequenced S. chinensis genome, we revisited the phylogenetic position of magnoliids within mesangiosperms, and recovered a sister relationship for magnoliids and Chloranthales. By considering differentially expressed genes, we identified candidate genes that are involved in the morphogenesis of the white leaves in S. chinensis. Among those genes, we verified -in a transgenic experiment with Arabidopsis -that increasing the expression of the 'pseudo-etiolation in light' gene (ScPEL) can inhibit the biosynthesis of chlorophyll.ScPEL is thus likely being responsible for the switches between green and white leaves, suggesting that changes in gene expression may underlie the evolution of pollination strategies. Despite being an herbaceous plant, S. chinensis still has vascular cambium and maintains the potential for secondary growth as a woody plant, because the necessary machinery, i.e., the entire gene set involved in lignin biosynthesis, is well preserved. However, similar expression levels of two key genes (CCR and CAD) between the stem and other tissues in the lignin biosynthesis pathway are possibly associated with the herbaceous nature of S. chinensis. In conclusion, the S. chinensis genome provides valuable insights into the adaptive evolution of pollination in Saururaceae and reveals a possible mechanism for the evolution of herbaceousness in magnoliids.

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Section: Introductionmentioning

confidence: 99%

The Saururus chinensis genome provides insights into the evolution of pollination strategies and herbaceousness in magnoliids

Xue

et al. 2023

The Plant Journal

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“…Indeed, until recently, only A. trichopoda (Albert et al, 2013), the sister species to all angiosperms, showed no evidence of WGD. Therefore, the recent availability of genome sequences of A. fimbriata , A. contorta , and also A. cherimola could facilitate future comparative genomics and evolution history studies of other species (Li & Van de Peer, 2021; Qin et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…A. cherimola could facilitate future comparative genomics and evolution history studies of other species (Li & Van de Peer, 2021;Qin et al, 2021).…”

Section: Comparative Genomicsmentioning

confidence: 99%

Genomics in neglected and underutilized fruit crops: A chromosome‐scale genome sequence of cherimoya (Annona cherimola)

Talavera

Fernandez-Pozo

Matas-Arroyo

et al. 2023

Plants People Planet

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Societal Impact Statement Cherimoya has been an important food source since Pre‐Columbian times in the Americas. Although it is currently considered an underutilized fruit crop, it is still important at the local level in several regions of Central and South America, and has a clear niche for expansion in regions with subtropical climates. However, the availability of genomic resources to facilitate breeding programs and improve the understanding of Annonaceae genetic diversity is limited. In this work, we provide an important resource to fill this knowledge gap, with the hope that it will ultimately increase this crop's resilience under different climate change scenarios, which will increase food security in regions with subtropical climates. Summary Cherimoya (Annona cherimola Mill.) is a perennial fruit tree crop native to the Neotropics valued since pre‐Columbian times by different native American civilizations. It belongs to the Annonaceae, the largest family of the Magnoliid clade, sister to the eudicot and monocot clades of angiosperms. Despite its excellent organoleptic and nutritive qualities, this crop remains underutilized, although it has a clear niche for expansion in regions with subtropical climates. To date, no previous significant genomic information is available for this species, which would be a key tool to optimize breeding programs and advance in the study and conservation of its extant genetic diversity. A combination of different sequencing technologies (Illumina, Pacific Biosciences) has been implemented in order to assemble a chromosome‐level reference genome of A. cherimola. The final reference genome resulted in an assembly of 1.13 Gb and N50 of 170.86 Mb, anchored into seven pseudomolecules and with a completeness of 95.6%. A total of 41,413 protein‐coding genes were identified, many of which were related to secondary metabolism, defense mechanisms, stress response, and development. The results of this study provide novel significant genomic resources not only for cherimoya and other species of the Annonaceae but also for understanding the evolution of the earlier divergent angiosperms.

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Pervasive genome duplications across the plant tree of life and their links to major evolutionary innovations and transitions

Qiao

Zhang

Paterson

2022

Computational and Structural Biotechnology Journal

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A non-duplicated magnoliid genome

Cited by 3 publications

References 16 publications

The Saururus chinensis genome provides insights into the evolution of pollination strategies and herbaceousness in magnoliids

The Saururus chinensis genome provides insights into the evolution of pollination strategies and herbaceousness in magnoliids

Genomics in neglected and underutilized fruit crops: A chromosome‐scale genome sequence of cherimoya (Annona cherimola)

Pervasive genome duplications across the plant tree of life and their links to major evolutionary innovations and transitions

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