An alternative agriculture system is defined by a distinct expression profile of select gene transcripts and proteins

AUTOR(ES)

Kumar, Vinod

FONTE

National Academy of Sciences

RESUMO

Conventional agriculture has relied heavily on chemical inputs that have negatively impacted the environment and increased production costs. Transition to agricultural sustainability is a major challenge and requires that alternative agricultural practices are scientifically analyzed to provide a sufficiently informative knowledge base in favor of alternative farming practices. We show a molecular basis for delayed leaf senescence and tolerance to diseases in tomato plants cultivated in a legume (hairy vetch) mulch-based alternative agricultural system. In the hairy vetch-cultivated plants, expression of specific and select classes of genes is up-regulated compared to those grown on black polyethylene mulch. These include N-responsive genes such as NiR, GS1, rbcL, rbcS, and G6PD; chaperone genes such as hsp70 and BiP; defense genes such as chitinase and osmotin; a cytokinin-responsive gene CKR; and gibberellic acid 20 oxidase. We present a model of how their protein products likely complement one another in a field scenario to effect efficient utilization and mobilization of C and N, promote defense against disease, and enhance longevity.

Documentos Relacionados

• Extraocular muscle is defined by a fundamentally distinct gene expression profile
• Distinct proteins encoded by alternative transcripts of the PURG gene, located contrapodal to WRN on chromosome 8, determined by differential termination/polyadenylation
• Differential splicing and alternative polyadenylation generates distinct NCAM transcripts and proteins in the mouse.
• Alternative splicing generates two distinct Eip28/29 gene transcripts in Drosophila Kc cells.
• Expression of the rat growth hormone-releasing hormone gene in placenta is directed by an alternative promoter.