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Figure 1 | BMC Genomics

Figure 1

From: Population-specific gene expression in the plant pathogenic nematode Heterodera glycines exists prior to infection and during the onset of a resistant or susceptible reaction in the roots of the Glycine max genotype Peking

Figure 1

Life cycle of H. glycines. A, cysts. B, pi-L2 (gray) hatch and migrate toward the root of G. max. C S , C R i-L2 nematodes burrow into the root and migrate toward the pericycle (green). D S , D R , i-L2 select a cell (yellow) for feeding site establishment. E S , i-L2 nematodes have molted into L3. E R , i-L2 nematodes do not increase in size. F S , The L3 undergo a subsequent molt into L4 nematodes. Meanwhile, the female continues to grow circumferentially as it feeds. The male discontinues feeding at the end of its L3 stage. Male and female L4 nematodes become adults. The vermiform male (blue) burrows outside the root and subsequently copulates with the female. F R , The syncytium collapses and the nematodes do not grow. G, After ~30 days, the female with eggs is clearly visible and emerging from the root. Figure adapted from Klink et al. (2008).

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BMC Genomics

ISSN: 1471-2164

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