| dc.creator | Izaguirre-Mayoral, María L. | |
| dc.creator | Brito, Miriam | |
| dc.creator | Baral, Bikash | |
| dc.creator | Garrido, Mario J. | |
| dc.date | 2017-10-17T16:46:31Z | |
| dc.date | 2017-10-17T16:46:31Z | |
| dc.date | 2017-10-17 | |
| dc.date.accessioned | 2022-10-28T01:27:32Z | |
| dc.date.available | 2022-10-28T01:27:32Z | |
| dc.identifier | 2223-7747 | |
| dc.identifier | http://hdl.handle.net/10872/16784 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4950317 | |
| dc.description | The effects of 2 mM silicon (Si) and 10 mM KNO3 (N)—prime signals for plant resistance to pathogens—were analyzed in healthy and Cowpea chlorotic mottle virus (CCMV) or Cowpea mild mottle virus (CMMV)-infected Bradyrhizobium-nodulated cowpea, yardlong bean and mung bean plants. In healthy plants of the three Vigna taxa, nodulation and growth were promoted in the order of Si + N > N > Si > controls. In the case of healthy cowpea and yardlong bean, the addition of Si and N decreased ureide and α-amino acids (AA) contents in the nodules and leaves in the order of Si + N> N > Si > controls. On the other hand, the addition of N arrested the deleterious effects of CCMV or CMMV infections on growth and nodulation in the three Vigna taxa. However, the addition of Si or Si + N hindered growth and nodulation in the CCMV- or CMMV-infected cowpea and yardlong bean, causing a massive accumulation of ureides in the leaves and nodules. Nevertheless, the AA content in leaves and nodules of CCMV- or CMMV-infected cowpea and yardlong bean was promoted by Si but reduced to minimum by Si + N. These results contrasted to the counteracting effects of Si or Si + N in the CCMV- and CMMV-infected mung bean via enhanced growth, nodulation and levels of ureide and AA in the leaves and nodules. Together, these observations suggest the fertilization with Si + N exclusively in virus-free cowpea and yardlong bean crops. However, Si + N fertilization must be encouraged in virus-endangered mung bean crops to enhance growth, nodulation and N-metabolism. It is noteworthy to see the enhanced nodulation of the three Vigna taxa in the presence of 10 mM KNO3. | |
| dc.language | en | |
| dc.subject | amino acid | |
| dc.subject | Cowpea chlorotic mottle bromovirus | |
| dc.subject | Cowpea mild mottle carlavirus | |
| dc.subject | root nodulation | |
| dc.subject | ureides | |
| dc.title | Silicon and nitrate differentially modulate the symbiotic performances of healthy and virus-infected Bradyrhizobium-nodulated cowpea (Vigna unguiculata), yardlong bean (V. unguiculata subsp. sesquipedalis) and mung bean (V. radiata) | |
| dc.type | Article | |
