Shared expression of crassulacean acid metabolism (CAM) genes pre-dates the origin of CAM in the genus Yucca.

ABSTRACT: Crassulacean acid metabolism (CAM) is a carbon-concentrating mechanism that has evolved numerous times across flowering plants and is thought to be an adaptation to water-limited environments. CAM has been investigated from physiological and biochemical perspectives, but little is known about how plants evolve from C3 to CAM at the genetic or metabolic level. Here we take a comparative approach in analyzing time-course data of C3, CAM, and C3+CAM intermediate Yucca (Asparagaceae) species. RNA samples were collected over a 24 h period from both well-watered and drought-stressed plants, and were clustered based on time-dependent expression patterns. Metabolomic data reveal differences in carbohydrate metabolism and antioxidant response between the CAM and C3 species, suggesting that changes

SUBMITTER: Heyduk K 

PROVIDER: S-EPMC6883266 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature