Abstract
Wheat leaf rust, caused by Puccinia triticina, poses a growing threat to global wheat production, necessitating alternative strategies for effective disease management. This study investigated the potential of gamma-aminobutyric acid (GABA) to enhance resistance to leaf rust in two wheat cultivars: the susceptible Morocco and moderately resistant Sakha 94 cultivar. Our findings revealed that GABA significantly improved resistance in both cultivars to P. triticina, particularly in Morocco, by mitigating disease severity and reducing pustule density and size while extending both incubation and latent periods. This study assessed the effectiveness of two GABA application methods: plants received 1 mM GABA treatment, as a foliar spray, twenty-four hours prior to infection (pre-GABA), and plants received 1 mM GABA treatment both 24 h before and after infection (pre-/post-GABA), with the latter yielding significantly better results in reducing infection severity and improving plant resilience. Additionally, GABA application influenced stomatal behavior, promoting closure that may enhance resilience against leaf rust. GABA application on plants also modulated the production of reactive oxygen species (ROS). This led to a stronger oxidative burst in both susceptible and moderately resistant cultivars. GABA increased O2●− levels in guard cells and surrounding stomata, enhancing stomatal closure and the hypersensitive response. GABA enhanced the accumulation of soluble phenols and increased the activity of key antioxidant enzymes, catalase (CAT) and peroxidase (POX), which are vital for managing oxidative stress. To the best of our knowledge, this investigation represents the first report into the impact of GABA on wheat leaf rust disease.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 13
Claim · model-written summary
GABA significantly improved rust resistance in Morocco wheat.
- Taxon
- Wheat
Triticum aestivumt0 - Material
- Moroccoe0
- Treatment
- GABAe0
- Interactor
- P. triticina
Puccinia triticinae0pathogen - Outcome
- resistancee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GABA significantly improved resistance in both cultivars to P. triticina, particularly in Morocco”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA significantly improved rust resistance in Sakha 94 wheat.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GABAe0
- Interactor
- P. triticinaPuccinia triticinae0pathogen
- Outcome
- resistancee0
- Direction
- improvede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GABA significantly improved resistance in both cultivars to P. triticina”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA reduced wheat leaf rust disease severity.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GABAt0
- Outcome
- disease severitye0
- Direction
- mitigatinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mitigating disease severity and reducing pustule density and size while extending both incubation and latent periods.”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA reduced wheat rust pustule density and size.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GABAt0
- Outcome
- pustule density and sizee0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reducing pustule density and size”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA extended wheat rust incubation and latent periods.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GABAt0
- Outcome
- incubation and latent periodse0
- Direction
- extendinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“extending both incubation and latent periods.”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA application before and after infection reduced infection severity more than preinfection application.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- pre-/post-GABAe0
- Outcome
- infection severitye0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants received 1 mM GABA treatment both 24 h before and after infection (pre-/post-GABA), with the latter yielding significantly better results in reducing infection severity”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA application before and after infection improved wheat resilience more than preinfection application.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- pre-/post-GABAe0
- Outcome
- plant resiliencee0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants received 1 mM GABA treatment both 24 h before and after infection (pre-/post-GABA), with the latter yielding significantly better results in reducing infection severity and improving plant resilience.”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA promoted wheat stomatal closure.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GABAe0
- Outcome
- stomatal behaviore0
- Direction
- promoting closuree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GABA application influenced stomatal behavior, promoting closure that may enhance resilience against leaf rust.”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA increased oxidative burst in both wheat cultivars.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GABAt0
- Outcome
- oxidative burste0
- Direction
- strongere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This led to a stronger oxidative burst in both susceptible and moderately resistant cultivars.”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA increased superoxide in wheat guard cells and surrounding stomata.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- guard cells and surrounding stomatae0
- Treatment
- GABAe0
- Outcome
- O2●− levelse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GABA increased O2●− levels in guard cells and surrounding stomata”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA enhanced soluble phenol accumulation in wheat.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GABAe0
- Outcome
- accumulation of soluble phenolse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GABA enhanced the accumulation of soluble phenols”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA increased wheat catalase activity.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GABAt0
- Gene
- catalase (CAT)e0
- Outcome
- activity of key antioxidant enzymes, catalase (CAT)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the activity of key antioxidant enzymes, catalase (CAT) and peroxidase (POX)”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
Claim · model-written summary
GABA increased wheat peroxidase activity.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- GABAt0
- Gene
- peroxidase (POX)e0
- Outcome
- activity of key antioxidant enzymese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the activity of key antioxidant enzymes, catalase (CAT) and peroxidase (POX)”
t0“Gamma-Aminobutyric Acid (GABA) as a Defense Booster for Wheat”
The same questions in other papers
gamma-aminobutyric acid · disease · Triticum aestivum (wheat)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →gamma-aminobutyric acid · quality: phytochemicals · Triticum aestivum (wheat)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →gamma-aminobutyric acid · physiology: antioxidant enzymes · Triticum aestivum (wheat)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →gamma-aminobutyric acid · growth · Triticum aestivum (wheat)Results agree
15 papers in the same direction as this paper
- positive
- positive
- positive
12 papers more in this group
See all 16 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.