التفاصيل البيبلوغرافية
| العنوان: |
Tn-seq profiling reveals that NodS of the beta-rhizobium Paraburkholderia phymatum is detrimental for nodulating soybean. |
| المؤلفون: |
Bellés-Sancho, Paula1 (AUTHOR) paula.belles@botinst.uzh.ch, Golaz, Daphné1 (AUTHOR), Paszti, Sarah1 (AUTHOR), Vitale, Alessandra1,2 (AUTHOR), Liu, Yilei1 (AUTHOR), Bailly, Aurélien1 (AUTHOR), Eberl, Leo1 (AUTHOR), James, Euan K.3 (AUTHOR), Pessi, Gabriella1 (AUTHOR) gabriella.pessi@botinst.uzh.ch |
| المصدر: |
Communications Biology. 12/27/2024, Vol. 7 Issue 1, p1-13. 13p. |
| مصطلحات موضوعية: |
*SENSITIVE plant, *ROOT-tubercles, *LIFE sciences, *BOTANY, *PLANT genetics |
| مستخلص: |
The beta-rhizobial strain Paraburkholderia phymatum STM815T is noteworthy for its wide host range in nodulating legumes, primarily mimosoids (over 50 different species) but also some papilionoids. It cannot, however, nodulate soybean (Glycine max [L.] Merr.), one of the world's most important crops. Here, we constructed a highly saturated genome-wide transposon library of a P. phymatum strain and employed a transposon sequencing (Tn-seq) approach to investigate the underlying genetic mechanisms of symbiotic incompatibility between P. phymatum and soybean. Soybean seedlings inoculated with the P. phymatum Tn-seq library display nodules on the roots that are mainly occupied by different mutants in a gene, nodS, coding for a methyltransferase involved in the biosynthesis of nodulation factors. The construction of a nodS deletion strain and a complemented mutant confirms that nodS is responsible for the nodulation-incompatibility of P. phymatum with soybean. Moreover, infection tests with different host plants reveal that NodS is necessary for optimal nodulation of common bean (Phaseolus vulgaris), but it is not required for nodulation of its natural host Mimosa pudica. In conclusion, our results suggest that NodS is involved in determining nodulation specificity of P. phymatum. Use of transposon-sequencing (Tn-seq) to explore the genetic basis underlying the incompatibility of the beta-rhizobium Paraburkholderia phymatum STM815 with soybean reveals that in the absence of the nodulation factor NodS, it could nodulate this agriculturally important crop. [ABSTRACT FROM AUTHOR] |
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