Stress signal

The paper:
E. Baena-González et al., “A central integrator of transcription networks in plant stress and energy signaling,” Nature, 448:938–42, 2007. (Cited in 66 papers)

The finding:
Research on how plants tolerate stress has largely been focused on studying the mechanisms and pathways of how plants respond to specific, isolated sources of stress, such as drought, salt, or temperature. But scientists from Harvard Medical School suspected that plants contained mechanisms that enabled them to respond to multiple stressors at the same time. They found that protein kinases KIN10 and KIN11 reprogram gene expression in Arabidopsis to produce a convergent metabolic response to varying levels of darkness, sugar, and other stressors.

The bonus:
The Arabidopsis protein kinase KIN10/11 has homologues in yeast (Snf1) and mammals (AMPK), all of which share a common role in energy signaling. This connection suggests that “the link between metabolism [and] stress resistance… involves a very ancient and conserved eukaryotic regulatory mechanism,” says study author Filip Rolland, a plant biologist at Katholieke Universiteit Leuven in Belgium.

The impact:
The “seminal paper led to an explosion of interest in the field,” says Sjef Smeekens, a molecular plant biologist at Utrecht University in the Netherlands. Since its publication, several papers have confirmed the findings.

The future:
Rolland and Elena Baena-González have since set up their own labs at the K.U. Leuven and Gulbenkian Institute in Portugal, respectively, to learn more about the KIN10/11 response.

Genes reprogrammed by KIN10/11 control:
Catabolic pathway
Trehalose metabolism
Ribosome biogenesis
Anabolism


Advertisement


 

Rate this article

Rating: 2.62/5 (32 votes )





it is early to generalise
by mabrouk el-sharkawy

[Comment posted 2010-02-11 13:35:12]
Tolerance or resistance to multiple environmental stresses is a complex phenomenon and it is too early to generalize that a set of protein molecules or a set of genes can integrate a ONE response for all aspects of stresses. Under field conditions, higher plants respond to various environmental factors singly or in combination via a set of phenotypic traits.






Front Cover

Register for FREE Online Access

  • »Current issue
  • »Best Places to Work and Salary surveys
  • »Daily news and monthly contents emails

Register »

Subscribe to the Magazine

  • »Monthly print issues
  • »Unlimited online access
  • »Special offers on books, apparel, and more

Subscribe »

Library Subscriptions
Recommend to a Librarian

Masthead | Contact | Advertise | Privacy Policy
© 1986-2012 The Scientist