Rhizobacteria Inoculation and Caffeic Acid Alleviated Drought Stress in Lentil Plants

Sustainability

Mazhar Abbas¹  Muqarrab Ali²  Abdallah M. Elgorban³  Mohammad Javed Ansari⁴  Rahul Datta⁵  Atiqa Zahid⁶  Yasir Iftikhar⁷  Muhammad Zafar-ul-Hye⁸  Muhammad Naeem Akbar⁸  Subhan Danish⁸  Shah Fahad⁹ 

[1] Department of Agriculture and Agribusiness Management, Faculty of Science, University of Karachi, Karachi 75270, Pakistan;Department of Agronomy, MNS-University of Agriculture, Multan 60000, Pakistan;Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;Department of Botany, Hindu College Moradabad, Mahatma Jyotiba Phule Rohilkhand Univesity Bareilly, Moradabad 244001, India;Department of Geology and Pedology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemedelska1, 61300 Brno, Czech Republic;Department of Mathematics & Statistics, PMAS Arid Agriculture University, Murree Road, Rawalpindi 46000, Pakistan;Department of Plant Pathology, College of Agriculture, University of Sargodha, Sargodha 40100, Pakistan;Department of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan 60800, Pakistan;Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, College of Tropical Crops, Hainan University, Haikou 570228, China;

关键词: abiotic stress;    plant growth;    legume;    caffeic acid;   

DOI  :  10.3390/su13179603

来源: DOAJ

【 摘 要 】

Lentil (Lens culinaris Medik) is an important component of the human diet due to its high mineral and protein contents. Abiotic stresses, i.e., drought, decreases plant growth and yield. Drought causes the synthesis of reactive oxygen species, which decrease a plant’s starch contents and growth. However, ACC-deaminase (1-aminocyclopropane-1-carboxylate deaminase) producing rhizobacteria can alleviate drought stress by decreasing ethylene levels. On the other hand, caffeic acid (CA) can also positively affect cell expansion and turgor pressure maintenance under drought stress. Therefore, the current study was planned with an aim to assess the effect of CA (0, 20, 50 and 100 ppm) and ACC-deaminase rhizobacteria (Lysinibacillus fusiform, Bacillus amyloliquefaciens) on lentils under drought stress. The combined application of CA and ACC-deaminase containing rhizobacteria significantly improved plant height (55%), number of pods per plant (51%), 1000-grain weight (45%), nitrogen concentration (56%), phosphorus concentration (19%), potassium concentration (21%), chlorophyll (54%), relative water contents RWC (60%) and protein contents (55%). A significant decrease in electrolyte leakage (30%), proline contents (44%), and hydrogen peroxide contents (54%), along with an improvement in cell membrane stability (34% over control) validated the combined use of CA and rhizobacteria. In conclusion, co-application of CA (20 ppm) and ACC-deaminase producing rhizobacteria can significantly improve plant growth and yield for farmers under drought stress. More investigations are suggested at the field level to select the best rhizobacteria and CA level for lentils under drought.

【 授权许可】

Unknown