Auxin Controls Root Gravitropic Response by Affecting Starch Granule Accumulation and Cell Wall Modification in Tomato.

ABSTRACT: The gravitropic growth of roots is crucial for plants to adapt to terrestrial environments and acquire nutrients from the soil. Tomatoes are a vital economic crop that requires abundant water and nutrients for growth and development. However, there are few reports on the regulatory mechanisms of tomato root gravitropism, particularly auxin-mediated root gravitropic growth. Here, we revealed the signaling pathway of auxin regulating tomato root gravity response through exogenous auxin and auxin inhibitor treatment combined with transcriptome profiling. Our data underscore the necessity of auxin biosynthesis, transport, and optimal levels for the gravitropic growth of tomato roots. Treatment with exogenous auxin or auxin biosynthesis inhibitors diminished gravitropic response in tomato roots

SUBMITTER: Liu H 

PROVIDER: S-EPMC11990612 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature