Burkholderia Phytofirmans PsJN Stimulate Growth and Yield of Quinoa under Salinity Stress
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Burkholderia Phytofirmans PsJN Stimulate Growth and Yield of Quinoa under Salinity Stress. / Yang, Aizheng; Akhtar, Saqib Saleem; Fu, Qiang; Naveed, Muhammad; Iqbal, Shahid; Roitsch, Thomas; Jacobsen, Sven-Erik.
In: Plants, Vol. 9, No. 6, 672, 2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Burkholderia Phytofirmans PsJN Stimulate Growth and Yield of Quinoa under Salinity Stress
AU - Yang, Aizheng
AU - Akhtar, Saqib Saleem
AU - Fu, Qiang
AU - Naveed, Muhammad
AU - Iqbal, Shahid
AU - Roitsch, Thomas
AU - Jacobsen, Sven-Erik
PY - 2020
Y1 - 2020
N2 - One of the major challenges in agriculture is to ensure sufficient and healthy food availability for the increasing world population in near future. This requires maintaining sustainable cultivation of crop plants under varying environmental stresses. Among these stresses, salinity is the second most abundant threat worldwide after drought. One of the promising strategies to mitigate salinity stress is to cultivate halotolerant crops such as quinoa. Under high salinity, performance can be improved by plant growth promoting bacteria (PGPB). Among PGPB, endophytic bacteria are considered better in stimulating plant growth compared to rhizosphere bacteria because of their ability to colonize both in plant rhizosphere and plant interior. Therefore, in the current study, a pot experiment was conducted in a controlled greenhouse to investigate the effects of endophytic bacteria i.e.,Burkholderia phytofirmansPsJN on improving growth, physiology and yield of quinoa under salinity stress. At six leaves stage, plants were irrigated with saline water having either 0 (control) or 400 mM NaCl. The results indicated that plants inoculated with PsJN mitigated the negative effects of salinity on quinoa resulting in increased shoot biomass, grain weight and grain yield by 12%, 18% and 41% respectively, over un-inoculated control. Moreover, inoculation with PsJN improved osmotic adjustment and ion homeostasis ability. In addition, leaves were also characterized for five key reactive oxygen species (ROS) scavenging enzyme in response to PsJN treatment. This showed higher activity of catalase (CAT) and dehydroascobate reductase (DHAR) in PsJN-treated plants. These findings suggest that inoculation of quinoa seeds withBurkholderia phytofirmansPsJN could be used for stimulating growth and yield of quinoa in highly salt-affected soils.
AB - One of the major challenges in agriculture is to ensure sufficient and healthy food availability for the increasing world population in near future. This requires maintaining sustainable cultivation of crop plants under varying environmental stresses. Among these stresses, salinity is the second most abundant threat worldwide after drought. One of the promising strategies to mitigate salinity stress is to cultivate halotolerant crops such as quinoa. Under high salinity, performance can be improved by plant growth promoting bacteria (PGPB). Among PGPB, endophytic bacteria are considered better in stimulating plant growth compared to rhizosphere bacteria because of their ability to colonize both in plant rhizosphere and plant interior. Therefore, in the current study, a pot experiment was conducted in a controlled greenhouse to investigate the effects of endophytic bacteria i.e.,Burkholderia phytofirmansPsJN on improving growth, physiology and yield of quinoa under salinity stress. At six leaves stage, plants were irrigated with saline water having either 0 (control) or 400 mM NaCl. The results indicated that plants inoculated with PsJN mitigated the negative effects of salinity on quinoa resulting in increased shoot biomass, grain weight and grain yield by 12%, 18% and 41% respectively, over un-inoculated control. Moreover, inoculation with PsJN improved osmotic adjustment and ion homeostasis ability. In addition, leaves were also characterized for five key reactive oxygen species (ROS) scavenging enzyme in response to PsJN treatment. This showed higher activity of catalase (CAT) and dehydroascobate reductase (DHAR) in PsJN-treated plants. These findings suggest that inoculation of quinoa seeds withBurkholderia phytofirmansPsJN could be used for stimulating growth and yield of quinoa in highly salt-affected soils.
KW - endophytic bacteria
KW - plant growth promoting bacteria (PGPB)
KW - SALT TOLERANCE
KW - DROUGHT STRESS
KW - PLANT-GROWTH
KW - OXIDATIVE STRESS
KW - ABSCISIC-ACID
KW - MECHANISMS
KW - RESPONSES
KW - METABOLISM
KW - BIOCHAR
KW - OXYGEN
U2 - 10.3390/plants9060672
DO - 10.3390/plants9060672
M3 - Journal article
C2 - 32466435
VL - 9
JO - Plants
JF - Plants
SN - 2223-7747
IS - 6
M1 - 672
ER -
ID: 249481624