Event Title

AtSIF: A Gene Linking Abiotic Stress Response and Flowering

Presenter Information

Jenny Ballif
Yajun Wu

Location

Eccles Conference Center

Event Website

http://water.usu.edu/

Start Date

3-27-2006 10:55 AM

End Date

3-27-2006 10:00 AM

Description

Drought, extreme temperature, and nutrient deficiency can affect timing of flowering in many plants. Very often, plants will flower earlier than they would otherwise when experiencing mild stress. This phenomenon of stress-induced flowering is a strategy for plant survival and has a great impact on agricultural crop production. However, a genetic cause or mechanism for the phenomenon has not yet been discovered. We have identified a gene from Arabidopsis, called AtSIF, which may lead to a revelation of mechanism of stress-induced flowering. Expression of AtSIF gene is greatly enhanced by cold, salt, osmotic stress and nutrient deficiency. It also has a dramatic influence on the timing of flowering in Arabidopsis: plants that are overexpressing AtSIF flower earlier than wild-type plants, while knockout mutants exhibit delayed flowering. Our preliminary data showed that mutant plants also flower differently in response to stresses than wild-type plants, indicating that AtSIF is involved in stress-induced flowering.

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Mar 27th, 10:55 AM Mar 27th, 10:00 AM

AtSIF: A Gene Linking Abiotic Stress Response and Flowering

Eccles Conference Center

Drought, extreme temperature, and nutrient deficiency can affect timing of flowering in many plants. Very often, plants will flower earlier than they would otherwise when experiencing mild stress. This phenomenon of stress-induced flowering is a strategy for plant survival and has a great impact on agricultural crop production. However, a genetic cause or mechanism for the phenomenon has not yet been discovered. We have identified a gene from Arabidopsis, called AtSIF, which may lead to a revelation of mechanism of stress-induced flowering. Expression of AtSIF gene is greatly enhanced by cold, salt, osmotic stress and nutrient deficiency. It also has a dramatic influence on the timing of flowering in Arabidopsis: plants that are overexpressing AtSIF flower earlier than wild-type plants, while knockout mutants exhibit delayed flowering. Our preliminary data showed that mutant plants also flower differently in response to stresses than wild-type plants, indicating that AtSIF is involved in stress-induced flowering.

https://digitalcommons.usu.edu/runoff/2006/AllPosters/2