Figure 2

Anatomy of SBRs under control and at 15 and 30 days after drought exposure of commercial hybrids (Co 775, Co 86032) and Erianthus clones (IND 04-1335, SES 288). (a) Co 775, (b) Co 86032, (c) IND 04-1335, (d) SES 288. E-Endodermis, P-Pericycle, PX-Protoxylem. Red arrows indicate the collapsed protoxylem in Co 775 and Co 86032. Blue arrows indicate the collapsed endoderm layer, asterisks indicate the intact protoxylem elements and rectangular boxes highlight the cell wall thickening around endodermis, pericycle and protoxylem in IND 04-1335 and SES 288. Scale bar = 100 µM.