Year: 1999
Type: article
Abstract: Addition of insulin to maize seed (Zea mays L. cv. Chalqueño) was found to accelerate germination and seedling growth. Insulin‐stimulated maize axes showed enhancement of S‐methionine incorporation into ribosomal proteins (rp) and mobilization of S6 rp mRNA into polysomes. Increase in S6 rp phosphorylation of the small ribosomal subunit (40S) was observed in P‐orthophosphate pulse‐labeled experiments when maize axes were stimulated by insulin. Application of either wortmannin or rapamycin, inhibitors of protein kinases of the insulin transduction pathway, abolished the insulin stimulatory effect on S6 rp phosphorylation and on ribosomal protein synthesis. The above data are interpreted as an indication of the existence of an insulin‐stimulated signal transduction pathway in maize tissues that is involved in the regulation of translation.
Source: Physiologia Plantarum
Institution: Universidad Nacional Autónoma de México
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2079488792