Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.4067/S0718-58392022000100167 |
Mitigation of salt stress damages in Carica papaya L. seedlings through exogenous pretreatments of gibberellic acid and proline | |
Alvarez-Mendez, Sergio J.; Urbano-Galvez, Antonio; Mahouachi, Jalel | |
通讯作者 | Mahouachi, J |
来源期刊 | CHILEAN JOURNAL OF AGRICULTURAL RESEARCH
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ISSN | 0718-5839 |
出版年 | 2022 |
卷号 | 82期号:1 |
英文摘要 | Salinity is a serious threat for global agriculture, especially in arid and semi-arid regions where its incidence leads to considerable damages in the crop growth and production. Carica papaya L. is currently one of the most cultivated fruit crops in the tropical and subtropical areas, and generally, papaya cultivars exhibit a moderate sensitivity to salinity, although such responses may depend on the genotypes. In the present study, papaya seedlings were subjected to salt stress (100 mM NaCl) for 41 d and to exogenous gibberellic acid (GA3; 0.1 mM) and proline (10 mM) pretreatments to evaluate plant physiological variables linked to stress responses. Analysis of the data (P < 0.05) showed a general decrease of plant growth parameters induced by solely salt stress compared to control, such as stem height (47%) and thickness (33%) and plant fresh and dry mass (84% and 83%, respectively), as well as a reduction in the stomatal opening (93%), chlorophylls (40%) and carotenoids (71%) concentration. By contrast, a significant increase was found in foliar and radicular proline levels under stress (87% and 47%). Exogenous foliar GA3 or proline respectively induced a better performance of plants under salt stress by increasing stomatal conductance (444% or 350%), stem height (142% or 144%) and plant biomass (49% or 41%) regarding solely stressed plants, and leading to pigments concentrations close to those from control plants. The results suggest that exogenous gibberellic acid and proline as growth regulator and osmo-regulator solute, respectively could increase papaya seedlings adaption against salt stress. |
英文关键词 |   Photosynthetic pigments plant growth subtropics |
类型 | Article |
语种 | 英语 |
开放获取类型 | gold |
收录类别 | SCI-E |
WOS记录号 | WOS:000749709200001 |
WOS关键词 | GROWTH ; GERMINATION ; YIELD |
WOS类目 | Agriculture, Multidisciplinary ; Agronomy |
WOS研究方向 | Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/376728 |
推荐引用方式 GB/T 7714 | Alvarez-Mendez, Sergio J.,Urbano-Galvez, Antonio,Mahouachi, Jalel. Mitigation of salt stress damages in Carica papaya L. seedlings through exogenous pretreatments of gibberellic acid and proline[J],2022,82(1). |
APA | Alvarez-Mendez, Sergio J.,Urbano-Galvez, Antonio,&Mahouachi, Jalel.(2022).Mitigation of salt stress damages in Carica papaya L. seedlings through exogenous pretreatments of gibberellic acid and proline.CHILEAN JOURNAL OF AGRICULTURAL RESEARCH,82(1). |
MLA | Alvarez-Mendez, Sergio J.,et al."Mitigation of salt stress damages in Carica papaya L. seedlings through exogenous pretreatments of gibberellic acid and proline".CHILEAN JOURNAL OF AGRICULTURAL RESEARCH 82.1(2022). |
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