Three types of AS isoforms produced under different conditions and characteristics of Switching AS-type isoforms.
(a) The diagrams show the relative abundance (the ratio of isoforms over annotated forms) of three types of AS transcripts during the growth stages analysed. Constitutive AS and Low-frequency AS isoforms indicate those with the relative abundances of > 0.5 and < 0.5, respectively. Switching AS-type isoforms include those fluctuating between the first two types between mycelia and infected rice. (b) Expression patterns of the following four groups of Switching AS-type isoforms during infection: grey box (the isoforms abundantly produced at all infection stages), yellow box (those produced higher than corresponding annotated forms only at the pre-penetration stage, 18 hpi), green box (those produced higher than corresponding annotated forms only at the biotrophic stage, 25 hpi or 36 hpi), and orange box (those produced higher than corresponding annotated forms only at the necrotrophic stage, 45 hpi or 72 hpi). (c) The GO terms enriched among the genes that produce Switching AS-type isoforms (P-value < 0.05).