Heat stress

Heat Stress Tolerance - by A. Malcolm Campbell (Spring Semester, 2013)

There are four types of heat tolerance (Yeh et al., 2012)

1. basal thermotolerance
2. short-term acquired thermotolerance
3. long-term acquired thermotolerance
4. thermotolerance to moderately high temperature

Heat Shock Transcription Factors (HsFs) are subdivided into three classes called A, B and C. (Lin et al., 2011)
25 maize HsFs have been identified (see table from Lin et al.)

The DNS Binding Domain (DBD) from HsFs was used as a query to find them in maize. zmHsFs were aligned to show conservation and divergence. (Lin et al., 2011).

In Arabidopsis, ABSCISIC ACID–INSENSITIVE3 (ABI3) is a transcription factor induced in seeds that induces the transcription of seed-specific HsFs (Kotak et al., 2007). I should look for the blueberry ortholog.

In Monke et al., 2012, they found transcription factors (LEC1, PIL5 and AGL15) that turn on the production of ABI3. You can see what activates ABI3 and what ABI3 activates in the figure below (Monke et al., 2012).

Larkindale et al. (2005) found several genes that are involved in thermotolerance.

http://www.ncbi.nlm.nih.gov/pubmed/22516818

HsfA 1-independent acquired thermotolerance

From Liu and Charng, 2012

The role of nitric oxide in heat-stress:

From Beard et al., 2012