Diel rewiring and positive selection of ancient plant proteins enabled evolution of CAM photosynthesis in Agave.

ABSTRACT:

Background

Crassulacean acid metabolism (CAM) enhances plant water-use efficiency through an inverse day/night pattern of stomatal closure/opening that facilitates nocturnal CO₂ uptake. CAM has evolved independently in over 35 plant lineages, accounting for ~ 6% of all higher plants. Agave species are highly heat- and drought-tolerant, and have been domesticated as model CAM crops for beverage, fiber, and biofuel production in semi-arid and arid regions. However, the genomic basis of evolutionary innovation of CAM in genus Agave is largely unknown.

Results

Using an approach that integrated genomics, gene co-expression networks, comparative genomics and protein structure analyses, we investigated the molecular evolution of CAM as exemplified in Agave. Comparative g

SUBMITTER: Yin H 

PROVIDER: S-EPMC6090859 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature