Abstract
Heterodera glycines (soybean cyst nematode, SCN) is one of the most devastating pathogens of soybean worldwide. The compatible and in compatible interactions between soybean and SCN have well documented. Nevertheless, the molecular mechanism of a nonhost resistant response in soybean against SCN infection remains obscure. Toward this end, a global transcriptional comparison was conducted between susceptible and resistant reactions of soybean roots infected by taking advantage of finding a new pathotype of SCN (SCNT). The soybean cultivar Lee, which exhibits resistant to SCNT and susceptible to HG 1.2.3.4.7 (SCNs) was utilized in the expriments. The results highlighted a nonhost resistant response of soybean. Transcriptome analysis indicated that the number of differentially expressed genes (DEGs) in the resistant interaction (3746) was much larger than that in the susceptible interaction (602). A great number of genes acting as intrinsic component of membrane, integral component of membrane, cell periphery and plasma membrance were remarkably enriched only in the resistant interaction, while the taurine and hypotaurine, phenylpropanoid pathway, plant-pathogen interaction and transcript factors were modulated in both interactions. This is the first study to examine genes expression patterns in a soybean genotype in response to invasion by a virulent and avirulent SCN population at the transcriptional level, which will provide insights into the complicate molecular mechanism of the nonhost resistant interaction.
Highlights
Soybean (Glycine max (L.) Merr.) is an important crop that provides a valuable source of protein and oil all over the world [1]
It is worthwhile noticing that a nonhost resistant response occurred between soybean cultivar Lee and SCNT [6], in which, nematodes of SCNT can reach the roots of soybean, plants are capable of preventing the growth, development and reproduction of nematodes in order to restrain the infection of nematodes to the roots [7]
The soybean genotype Lee was used for the analysis, which exhibits susceptible to SCNS but resistant to SCNT
Summary
Soybean (Glycine max (L.) Merr.) is an important crop that provides a valuable source of protein and oil all over the world [1]. It is worthwhile noticing that a nonhost resistant response occurred between soybean cultivar Lee and SCNT [6], in which, nematodes of SCNT can reach the roots of soybean, plants are capable of preventing the growth, development and reproduction of nematodes in order to restrain the infection of nematodes to the roots [7]. The observation of this special population provides a valuable opportunity to explore the mechanism of the nonhost resistant response. The interaction mechanisms between the two populations and soybean roots remain elusive
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