Pea leaf ABA response to short-term heat stress at flowering stage
| dc.contributor.author | Huang, Shaoming | |
| dc.contributor.author | Warkentin, Tom | |
| dc.date.accessioned | 2020-03-23T19:08:16Z | |
| dc.date.available | 2020-03-23T19:08:16Z | |
| dc.date.issued | 2020-03-10 | |
| dc.description.abstract | The balance between abscisic acid (ABA) synthesis and catabolism plays an important role in the plant's response towards multiple abiotic stresses including cold, drought and salt stress; however, the connection between ABA homeostasis and plant's heat response is still elusive. We assessed pea leaf ABA biosynthesis and catabolism at different time periods under 38°C among five pea varieties with varying heat tolerance by profiling the concentrations of ABA and its five key ABA catabolites from the four major ABA metabolic pathways via liquid chromatography-multiple reaction monitoring assay. More ABA accumulated in the ABA metabolism pool at high temperature condition compared to normal temperature; the ABA response started immediately after 3 hour. Heat tolerant varieties had a higher ABA synthesis and turnover rate at high temperature, than their respective heat susceptible counterparts. Further we valida ted that pea ABA responsive protein genes (ABR17 & ABR18) did not relate to the ABA induction above-mentioned. Identification of the key gene for the heat-induced ABA response still remains to be done for a better understanding on ABA's role in heat response, as well as the responsive variation between heat tolerant and sensitive varieties. This study aids in understanding the impact of a warming summer on the pea plant in the perspective of hormone regulation, and gives a new direction to perceive the different heat tolerance among Canadian pea varieties. | en_US |
| dc.description.version | Non-Peer Reviewed | en_US |
| dc.identifier.uri | http://hdl.handle.net/10388/12720 | |
| dc.language.iso | en | en_US |
| dc.relation.ispartof | Soils and Crops Workshop | en_US |
| dc.rights | Attribution-NonCommercial-NoDerivs 2.5 Canada | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/2.5/ca/ | * |
| dc.subject | field pea | en_US |
| dc.subject | ABA | en_US |
| dc.subject | short term heat stress | en_US |
| dc.subject | flowering | en_US |
| dc.subject | heat stress | en_US |
| dc.subject | homeostasis | en_US |
| dc.subject | Pisum sativum | en_US |
| dc.subject | heat response | en_US |
| dc.subject | ABA responsive genes | en_US |
| dc.title | Pea leaf ABA response to short-term heat stress at flowering stage | en_US |
| dc.type | Presentation | en_US |