Abstract
Oats (Avena sativa L) is a temperate cereal and an important healthy cereal cultivated for food and feed. Therefore, understanding drought responses in oats could significantly impact oat production under harsh climatic conditions. In particular, drought during anthesis (flowering) affects grain filling, quality and yield. Here, we characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis. In the more drought-tolerant Patones, the developing grains from the top (older) and bottom (younger) spikelets of primary panicle were found to be larger in size in response to drought, suggesting accelerated grain development. Flega showed a more rapid transition to flowering and grain development under drought. The metabolomes of source (sheath, flag leaf, rachis) and sink (developing grains) tissues from Patones showed differential accumulation in fatty acids levels, including α-linolenic acid, sugars and amino acids with drought. Flega showed enhanced energy metabolism in both source and sink tissues. Lower levels of glutathione in source tissues and the accumulation of ophthalmic acid in the grains of Flega were indicators of oxidative stress. Our study revealed two distinct metabolite regulatory patterns in these cultivars during drought at anthesis. In Patones, α-linolenic acid-associated processes may accelerate grain-filling, while in Flega oxidative stress appears to influence traits such as flowering time. Overall, this work provides a first insight into the metabolite regulation in oat's source and sink tissues during anthesis under drought stress.
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Claims 10
Claim · model-written summary
Developing grains of Patones were larger in size under drought.
- Taxon
- Avena sativa
Avena sativae0 - Material
- Patonese1
- Organ / stage
- developing grainse1
- Treatment
- droughte1
- Outcome
- sizee1
- Direction
- largere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e1“In the more drought-tolerant Patones, the developing grains from the top (older) and bottom (younger) spikelets of primary panicle were found to be larger in size in response to drought”
Claim · model-written summary
Flega showed a more rapid transition to flowering under drought.
- Taxon
- Avena sativaAvena sativae0
- Material
- Flegae2
- Treatment
- droughte2
- Outcome
- transition to floweringe2
- Direction
- more rapide2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e2“Flega showed a more rapid transition to flowering and grain development under drought”
Claim · model-written summary
Source and sink tissues of Patones showed differential accumulation of fatty acids levels with drought.
- Taxon
- Avena sativaAvena sativae0
- Material
- Patonese3
- Organ / stage
- source (sheath, flag leaf, rachis) and sink (developing grains) tissuese3
- Treatment
- droughte3
- Outcome
- fatty acids levelse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e3“The metabolomes of source (sheath, flag leaf, rachis) and sink (developing grains) tissues from Patones showed differential accumulation in fatty acids levels, including α-linolenic acid, sugars and amino acids with drought”
Claim · model-written summary
Flega showed enhanced energy metabolism in source and sink tissues.
- Taxon
- Avena sativaAvena sativae0
- Material
- Flegae4
- Organ / stage
- source and sink tissuese4
- Outcome
- energy metabolisme4
- Qualifier
- enhancede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e4“Flega showed enhanced energy metabolism in both source and sink tissues”
Claim · model-written summary
Flega had lower levels of glutathione in source tissues.
- Taxon
- Avena sativaAvena sativae0
- Material
- Flegae5
- Organ / stage
- source tissuese5
- Compound
- glutathionee5
- Outcome
- levels of glutathionee5
- Qualifier
- Lowere5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e5“Lower levels of glutathione in source tissues and the accumulation of ophthalmic acid in the grains of Flega were indicators of oxidative stress”
Claim · model-written summary
Flega accumulated ophthalmic acid in its grains.
- Taxon
- Avena sativaAvena sativae0
- Material
- Flegae5
- Organ / stage
- grainse5
- Compound
- ophthalmic acide5
- Outcome
- accumulation of ophthalmic acide5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e5“Lower levels of glutathione in source tissues and the accumulation of ophthalmic acid in the grains of Flega were indicators of oxidative stress”
Claim · model-written summary
Lower glutathione and ophthalmic acid accumulation in Flega indicate oxidative stress.
- Taxon
- Avena sativaAvena sativae0
- Material
- Flegae5
- Outcome
- oxidative stresse5
- Qualifier
- Lower levels of glutathione in source tissuese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e5“Lower levels of glutathione in source tissues and the accumulation of ophthalmic acid in the grains of Flega were indicators of oxidative stress”
Claim · model-written summary
Alpha-linolenic acid-associated processes may accelerate grain-filling in Patones.
- Taxon
- Avena sativaAvena sativae0
- Material
- Patonese6
- Compound
- α-linolenic acide6
- Outcome
- grain-fillinge6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e6“In Patones, α-linolenic acid-associated processes may accelerate grain-filling”
Claim · model-written summary
Oxidative stress may influence flowering time in Flega.
- Taxon
- Avena sativaAvena sativae0
- Material
- Flegae7
- Outcome
- flowering timee7
- Qualifier
- oxidative stresse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e7“in Flega oxidative stress appears to influence traits such as flowering time”
Claim · model-written summary
The study revealed two distinct metabolite regulatory patterns in these oat cultivars under drought at anthesis.
- Taxon
- Avena sativaAvena sativae0
- Treatment
- droughte7
- Outcome
- metabolite regulatory patternse7
- Qualifier
- two distincte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“characterised metabolite responses of two Mediterranean oat (Avena sativa L.) cultivars, Flega and Patones, during drought stress at anthesis”
e7“Our study revealed two distinct metabolite regulatory patterns in these cultivars during drought at anthesis”
The same questions in other papers
drought · growth · Avena sativa (oats)Positive and negative results
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