Transcriptomic and Biochemical Analysis Reveal Integrative Pathways Between Carbon and Nitrogen Metabolism in Guzmania monostachia (Bromeliaceae) Under Drought.

ABSTRACT: Most epiphytes are found in low-nutrient environments with an intermittent water supply. To deal with water limitation, many bromeliads perform crassulacean acid metabolism (CAM), such as Guzmania monostachia, which shifts from C₃ to CAM and can recycle CO₂ from the respiration while stomata remain closed during daytime and nighttime (CAM-idling mode). Since the absorbing leaf trichomes can be in contact with organic (urea) and inorganic nutrients (NO₃ ^-, NH₄ ⁺) and the urea hydrolysis releases NH₄ ⁺ and CO₂, we hypothesized that urea can integrate the N and C metabolism during periods of severe drought. Under this condition, NH₄ ⁺ can be assimilated into amino ac

SUBMITTER: Goncalves AZ 

PROVIDER: S-EPMC8531410 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature