Associative N2 fixation and root exudation of organic acids from wheat cultivars of different aluminium tolerance

1992 ◽  
Vol 139 (2) ◽  
pp. 167-174 ◽  
Author(s):  
C. Christiansen-Weniger ◽  
A. F. Groneman ◽  
J. A. van Veen
Keyword(s):  
Organic Acids ◽  
N2 Fixation ◽  
Root Exudation ◽  
Aluminium Tolerance ◽  
Wheat Cultivars ◽  
Associative N2 Fixation

Root Exudation of Organic Acids of Herbaceous Pioneer Plants and Their Growth in Sterile and Non-Sterile Nutrient-Poor, Sandy Soils from Post-Mining Sites

Pedosphere ◽  
2019 ◽  
Vol 29 (1) ◽  
pp. 34-44 ◽  
Author(s):  
Katja BOLDT-BURISCH ◽  
Bernd Uwe SCHNEIDER ◽  
M. Anne NAETH ◽  
Reinhard F. HÜTTL
Keyword(s):  
Organic Acids ◽  
Root Exudation ◽  
Sandy Soils ◽  
Mining Sites ◽  
Pioneer Plants

Associative N2-fixation in plants growing in saline sodic soils and its relative quantification based on15N natural abundance

1991 ◽  
Vol 137 (1) ◽  
pp. 67-74 ◽  
Author(s):  
K. A. Malik ◽  
Rakhshanda Bilal ◽  
G. Rasul ◽  
K. Mahmood ◽  
M. I. Sajjad
Keyword(s):  
N2 Fixation ◽  
Natural Abundance ◽  
Relative Quantification ◽  
Sodic Soils ◽  
Associative N2 Fixation

LC–MS analysis of low molecular weight organic acids derived from root exudation

2010 ◽  
Vol 400 (8) ◽  
pp. 2587-2596 ◽  
Author(s):  
Leonhard Jaitz ◽  
Bernhard Mueller ◽  
Gunda Koellensperger ◽  
Daniela Huber ◽  
Eva Oburger ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Organic Acids ◽  
Root Exudation ◽  
Low Molecular Weight ◽  
Ms Analysis

Differences between calcifuge and acidifuge plants in root exudation of low-molecular organic acids

1994 ◽  
Vol 167 (2) ◽  
pp. 239-245 ◽  
Author(s):  
L. Str�m ◽  
T. Olsson ◽  
G. Tyler
Keyword(s):  
Organic Acids ◽  
Root Exudation

Effect of organic acids and NaCl on the rheological properties of dough prepared using Pembina and Harvest CWRS wheat cultivars

2018 ◽  
Vol 95 (3) ◽  
pp. 478-485 ◽  
Author(s):  
Andrea K. Stone ◽  
Ricky S. H. Lam ◽  
Erin J. Hopkins ◽  
Pierre Hucl ◽  
Martin G. Scanlon ◽  
...  
Keyword(s):  
Organic Acids ◽  
Rheological Properties ◽  
Wheat Cultivars

scholarly journals Associative N2-fixation in pearl millet and sorghum: Levels and response to inoculation

1994 ◽  
Vol 40 (3) ◽  
pp. 477-484 ◽  
Author(s):  
Keuk-Ki Lee ◽  
Suhas Pralhad Wani ◽  
Tadakatsu Yoneyama ◽  
Nunna Trimurtulu ◽  
Ramasubramani Harikrishnan
Keyword(s):  
Pearl Millet ◽  
N2 Fixation ◽  
Associative N2 Fixation

scholarly journals Differential Root Exudation and Architecture for Improved Growth of Wheat Mediated by Phosphate Solubilizing Bacteria

2021 ◽  
Vol 12 ◽  
Author(s):  
Mahreen Yahya ◽  
Ejaz ul Islam ◽  
Maria Rasul ◽  
Iqra Farooq ◽  
Naima Mahreen ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Organic Acids ◽  
Root Exudation ◽  
Principal Component ◽  
Phosphate Solubilizing Bacteria ◽  
Root Tips ◽  
Wheat Varieties ◽  
P Deficiency ◽  
Phosphate Solubilizing

Phosphorous (P) deficiency is a major challenge faced by global agriculture. Phosphate-solubilizing bacteria (PSB) provide a sustainable approach to supply available phosphates to plants with improved crop productivity through synergistic interaction with plant roots. The present study demonstrates an insight into this synergistic P-solubilizing mechanism of PSB isolated from rhizosphere soils of major wheat-growing agro-ecological zones of Pakistan. Seven isolates were the efficient P solubilizers based on in vitro P-solubilizing activity (233-365 μg ml–1) with a concomitant decrease in pH (up to 3.5) by the production of organic acids, predominantly acetic acid (∼182 μg ml–1) and gluconic acid (∼117 μg ml–1). Amplification and phylogenetic analysis of gcd, pqqE, and phy genes of Enterobacter sp. ZW32, Ochrobactrum sp. SSR, and Pantoea sp. S1 showed the potential of these PSB to release orthophosphate from recalcitrant forms of phosphorus. Principal component analysis indicates the inoculation response of PSB consortia on the differential composition of root exudation (amino acids, sugars, and organic acids) with subsequently modified root architecture of three wheat varieties grown hydroponically. Rhizoscanning showed a significant increase in root parameters, i.e., root tips, diameter, and surface area of PSB-inoculated plants as compared to uninoculated controls. Efficiency of PSB consortia was validated by significant increase in plant P and oxidative stress management under P-deficient conditions. Reactive oxygen species (ROS)-induced oxidative damages mainly indicated by elevated levels of malondialdehyde (MDA) and H2O2 contents were significantly reduced in inoculated plants by the production of antioxidant enzymes, i.e., superoxide dismutase, catalase, and peroxidase. Furthermore, the inoculation response of these PSB on respective wheat varieties grown in native soils under greenhouse conditions was positively correlated with improved plant growth and soil P contents. Additionally, grain yield (8%) and seed P (14%) were significantly increased in inoculated wheat plants with 20% reduced application of diammonium phosphate (DAP) fertilizer under net house conditions. Thus, PSB capable of such synergistic strategies can confer P biofortification in wheat by modulating root morphophysiology and root exudation and can alleviate oxidative stress under P deficit conditions.

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