Table 1

IPP gene number of Arabidopsis thaliana and Oryza sativa

Table 2

Quantitative PCR primers used

Table 3

Physicochemical properties of IPP protein

Fig.1

Phylogenetic tree， conserved motif domain and gene structure of IPPRed represents the Poaceae，yellow represents the Brassicaceae and white represents Solanaceae，Fabaceae，Vitaceae，Apiaceae，Cucurbitaceae，Euphorbiaceae and Salicaceae，respectively.

Table 4

Chromosome localization of IPP gene in each species

Table 5

Cis-acting elements in Arabidopsis and Oryza sativaIPP gene promoters

Fig.2

Interaction network and analysis of IPP between Oryza sativa and Arabidopsis thalianaA and B are the IPP protein interaction networks of Oryza sativa and Arabidopsis；C and D are the GO analysis of IPP interacting proteins of O. sativa and Arabidopsis IPP；E and F are KEGG analysis of IPP interacting proteins of O. sativa and Arabidopsis.

Fig.3

The expressional pattern of A. thaliana and O. sativaIPP genes in different organs and under different stress conditionsA and F represent the relative expression of A. thaliana and O. sativa IPP genes in different organs； B， C， D and E represent the expression changes of AT5G16440， AT3G02780， Os05g0413400 and Os07g0546000 genes under short-term stress， respectively； G， H， I and J represent the relative expression levels of AT5G16440， AT3G02780， Os05g0413400 and Os07g0546000 genes after one week of stress， respectively. * indicates significant difference， and ** indicates extremely significant difference.