Expansin genes expression in growing ovaries and grains of sunflower are tissue-specific and associate with final grain weight.

ABSTRACT:

Background

Grain weight (GW) is a key component of sunflower yield and quality, but may be limited by maternal tissues. Cell growth is influenced by expansin proteins that loosen the plant cell wall. This study aimed to identify spatio-temporal expression of EXPN genes in sunflower reproductive organ tissues (ovary, pericarp, and embryo) and evaluate correlations between reproductive organ growth and expansin genes expression. Evaluations involved eight different developmental stages, two genotypes, two source-sink treatments and two experiments. The genotypes evaluated are contrasting in GW (Alybro and confection variety RHA280) under two source-sink treatments (control and shaded) to study the interactions between grain growth and expansin genes expression.

Results

Ovaries

SUBMITTER: Castillo FM 

PROVIDER: S-EPMC6280438 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature