Table I. Classifications of the heat-induced genes differentially regulated by HSFA1s and HSFA2.

Heat shock-induced genes in three major groups (HSFA1s preferring, no significant preference, and HSFA2 preferring) were categorized based on published information functions predicted in The Arabidopsis Information Resource (Lamesch et al., 2012).

Functional Categories	HSFA1s Preferring		No Significant Preference		HSFA2 Preferring
	nos.	%	nos.	%	nos.	%
Signaling	2	2.8	3	3.9	4	4.4
Transcription	11	15.3	3	3.9	5	5.5
Posttranscriptional regulation	1	1.4	1	1.3	3	3.3
Chaperone and cochaperone	17	23.6	27	35.1	4	4.4
Redox homeostasis	4	5.6	2	2.6	8	8.8
Metabolism	3	4.2	4	5.2	19	20.9
Enzyme	5	6.9	8	10.4	13	14.3
Development	2	2.8
Heat tolerance			3	3.9
Metal homeostasis					1	1.1
Transporter					4	4.4
Unknown	27	38	26	33.8	30	33