Maize Carbohydrate partitioning defective1 impacts carbohydrate distribution, callose accumulation, and phloem function.

ABSTRACT: Plants synthesize carbohydrates in photosynthetic tissues, with the majority of plants transporting sucrose to non-photosynthetic tissues to sustain growth and development. While the anatomical, biochemical, and physiological processes regulating sucrose long-distance transport are well characterized, little is known concerning the genes controlling whole-plant carbohydrate partitioning. To identify loci influencing carbon export from leaves, we screened mutagenized maize plants for phenotypes associated with reduced carbohydrate transport, including chlorosis and excessive starch and soluble sugars in leaves. Carbohydrate partitioning defective1 (Cpd1) was identified as a semi-dominant mutant exhibiting these phenotypes. Phloem transport experiments suggested that the hyperaccumulation of

SUBMITTER: Julius BT 

PROVIDER: S-EPMC6054164 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature