Conservation and Divergence Between Bryophytes and Angiosperms in the Biosynthesis and Regulation of Flavonoid Production

Davies, Kevin; Jibran, Rubina; Albert, Nick W.; Zhou, Yufan; Schwinn, Kathy E.

doi:10.1002/9781119545958.ch9

Cited by 8 publications

(1 citation statement)

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“…It is possible the ancestor of hornworts diverged from the ancestor of other land plants prior to the evolution of the flavonoid pathway. As the prevalent theory is that bryophytes are monophyletic ( Leebens-Mack et al , 2019 ), it is more probable that a hornwort ancestor acquired mutations in flavonoid biosynthetic and/or regulatory genes ( Yonekura-Sakakibara et al , 2019 ; Davies et al , 2020 , 2021 ). This implies that either hornworts evolved alternative mechanisms that fulfil the functions of flavonoids or at some point the hornwort ancestor was in an environment in which selection pressure was low for retention of flavonoid functions.…”

Section: Flavonoidsmentioning

confidence: 99%

Stress, senescence, and specialized metabolites in bryophytes

Kulshrestha

Jibran

Klink

et al. 2022

Journal of Experimental Botany

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Life on land exposes plants to varied abiotic and biotic environmental stresses. These environmental drivers contributed to a large expansion of metabolic capabilities during land plant evolution and species diversification. In this review we summarise knowledge on how the specialised metabolite pathways of bryophytes may contribute to stress tolerance capabilities. Bryophytes are the non-tracheophyte land plant group (comprised of the hornworts, liverworts and mosses) that rapidly diversified following the colonisation of land. Mosses and liverworts have as wide a distribution as flowering plants with regard to available environments, able to grow in polar regions through to hot desert landscapes. Yet in contrast to flowering plants, for which the biosynthetic pathways, transcriptional regulation and compound function of stress tolerance-related metabolite pathways have been extensively characterised, it is only recently that similar data have become available for bryophytes. The bryophyte data are compared to that available for angiosperms, including examining how the differing plant forms of bryophytes and angiosperms may influence specialised metabolite diversity and function. The involvement of stress-induced specialised metabolites in senescence and nutrient response pathways is also discussed.

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