Abstract
Salinity degrades the environment, reducing the productive capacity of affected land. This presents a significant challenge in agriculture; however, different crops are known to vary in their tolerance to salt stress. This study investigated the tolerance of two oat (Avena sativa L.) lines, Baiyan2 and Mengnongda1, to salinity stress. Oat lines were subjected to salt treatments (100 mM NaCl) for a two-week period and growth and physiological parameters of the two lines were compared. Salinity did not appear to affect the leaf and root dry weight of Baiyan2. In contrast, the leaf and root dry weight of Mengnongda1 showed a reduction of 42% and 35%, respectively. Additionally, leaf osmotic potential was higher in salt-treated Baiyan2 than in treated Mengnongda1 in all plant organs, suggesting that Baiyan2 is able to maintain better water status in saline conditions. Xylem proline concentration, sheath proline concentration, and proline contribution to sheath osmotic potential were also higher in salt-treated Baiyan2 than in treated Mengnongda1. Results also showed that salt-treated Baiyan2 retained similar levels of root potassium (K+) when compared to control plants, indicating that Baiyan2 has the capacity to maintain ionic homeostasis in root tissues in saline conditions. Contrastingly, salt-treated Mengnongdal seedlings showed a reduction of 34.3% in root K+. The sodium (Na+) and K+ contributions to leaf osmotic potential were also higher in Baiyan2 than in Mengnongda1 under saline conditions, indicating that leaf Na+ and K+ may have a beneficial role in leaf growth of Baiyan2. Our findings suggest that Baiyan2 may have a physiological mechanism that confers a higher salinity tolerance. Accordingly, the Baiyan2 oat line may constitute an important source of germplasm for developing salinity tolerance in oats.
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Claims 10
Claim · model-written summary
Baiyan2 leaf and root dry weight appeared unaffected by salt.
- Taxon
- Oat
Avena sativae1 - Material
- Baiyan2e0
- Treatment
- salt treatments (100 mM NaCl)e1
- Outcome
- leaf and root dry weighte0
- Direction
- did not appear to affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity did not appear to affect the leaf and root dry weight of Baiyan2”
e1“Oat lines were subjected to salt treatments (100 mM NaCl)”
Claim · model-written summary
Mengnongda1 leaf dry weight declined 42% with salt treatment.
- Taxon
- OatAvena sativae1
- Material
- Mengnongda1e0
- Treatment
- salt treatments (100 mM NaCl)e1
- Outcome
- the leaf and root dry weighte0
- Direction
- reductione0
- Value
- 42%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf and root dry weight of Mengnongda1 showed a reduction of 42% and 35%, respectively”
e1“Oat lines were subjected to salt treatments (100 mM NaCl)”
Claim · model-written summary
Mengnongda1 root dry weight declined 35% with salt treatment.
- Taxon
- OatAvena sativae1
- Material
- Mengnongda1e0
- Treatment
- salt treatments (100 mM NaCl)e1
- Outcome
- root dry weighte0
- Direction
- reductione0
- Value
- 35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf and root dry weight of Mengnongda1 showed a reduction of 42% and 35%, respectively”
e1“Oat lines were subjected to salt treatments (100 mM NaCl)”
Claim · model-written summary
Salt-treated Baiyan2 had higher leaf osmotic potential than treated Mengnongda1.
- Taxon
- oatAvena sativat0
- Material
- Baiyan2e0
- Outcome
- leaf osmotic potentiale0
- Direction
- highere0
- Qualifier
- in all plant organse0
- Comparator
- Mengnongda1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf osmotic potential was higher in salt-treated Baiyan2 than in treated Mengnongda1 in all plant organs”
t0“oat (Avena sativa L.)”
Claim · model-written summary
Salt-treated Baiyan2 had higher xylem and sheath proline concentration and proline contribution to sheath osmotic potential than treated Mengnongda1.
- Taxon
- oatAvena sativat0
- Material
- Baiyan2e0
- Outcome
- Xylem proline concentration, sheath proline concentration, and proline contribution to sheath osmotic potentiale0
- Direction
- highere0
- Comparator
- Mengnongda1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Xylem proline concentration, sheath proline concentration, and proline contribution to sheath osmotic potential were also higher in salt-treated Baiyan2 than in treated Mengnongda1”
t0“oat (Avena sativa L.)”
Claim · model-written summary
Salt-treated Baiyan2 retained similar root potassium levels to controls.
- Taxon
- oatAvena sativat0
- Material
- Baiyan2e0
- Treatment
- salt-treatede0
- Outcome
- levels of root potassium (K+)e0
- Direction
- similare0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt-treated Baiyan2 retained similar levels of root potassium (K+) when compared to control plants”
t0“oat (Avena sativa L.)”
Claim · model-written summary
Salt-treated Mengnongdal seedlings had 34.3% less root K+.
- Taxon
- oatAvena sativat0
- Material
- Mengnongdale0
- Treatment
- salt-treatede0
- Outcome
- root K+e0
- Direction
- reductione0
- Value
- 34.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt-treated Mengnongdal seedlings showed a reduction of 34.3% in root K+”
t0“oat (Avena sativa L.)”
Claim · model-written summary
Under salinity, Baiyan2 had higher sodium and potassium contributions to leaf osmotic potential than Mengnongda1.
- Taxon
- oatAvena sativat0
- Material
- Baiyan2e0
- Outcome
- sodium (Na+) and K+ contributions to leaf osmotic potentiale0
- Direction
- highere0
- Comparator
- Mengnongda1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sodium (Na+) and K+ contributions to leaf osmotic potential were also higher in Baiyan2 than in Mengnongda1 under saline conditions”
t0“oat (Avena sativa L.)”
Claim · model-written summary
The authors suggest Baiyan2 may have a physiological mechanism conferring greater salinity tolerance.
- Taxon
- oatAvena sativat0
- Material
- Baiyan2e0
- Outcome
- higher salinity tolerancee0
- Qualifier
- physiological mechanisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Baiyan2 may have a physiological mechanism that confers a higher salinity tolerance”
t0“oat (Avena sativa L.)”
Claim · model-written summary
The authors propose Baiyan2 as germplasm for developing salt tolerant oats.
- Taxon
- oatAvena sativae0
- Material
- Baiyan2e0
- Outcome
- source of germplasm for developing salinity tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Baiyan2 oat line may constitute an important source of germplasm for developing salinity tolerance in oats”
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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.