Abstract
A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars. We investigated the effects of water deficits on leaf water relations, osmotic adjustment, stomatal conductance, cuticular conductance, cell membrane stability (CMS) measured by the polyethylene glycol (PEG) test, epicuticular wax load (EWL), cytoplasmic lipid content, solute concentration in cell sap, and growth. Osmotic adjustment was observed under water deficit conditions. Lower osmotic potential enabled plants to maintain turgor and decreased the sensitivity of turgor-dependent processes. Sugar and K were identified as the major solutes contributing to osmotic potential in sorghum. Sugar and K concentrations in cell sap increased by 37·4% and 27%, respectively, under water deficit conditions in favour of decreasing osmotic potential. Stomatal conductance and cuticular conductance were lower in the non-irrigated plants. A wide range in CMS among four cultivars was observed. CMS increased with increasing water deficits. EWL increased on leaves of water deficient plants and was positively correlated with cuticular conductance and CMS. Membrane phospholipid content increased in water-stressed plants. CMS as measured by the PEG test, was influenced by EWL, cuticular thickness, and osmotic concentration of leaf tissues. The cultivars which maintained higher CMS, higher EWL, lower cuticular conductance, higher turgor and higher osmotic adjustment under water deficit conditions were identified as drought tolerant.
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Claims 13
Claim · model-written summary
Osmotic adjustment was observed under water deficit conditions in sorghum.
SorghumNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e1“Osmotic adjustment was observed under water deficit conditions”
Claim · model-written summary
Lower osmotic potential helped sorghum plants maintain turgor.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e2“Lower osmotic potential enabled plants to maintain turgor and decreased the sensitivity of turgor-dependent processes”
Claim · model-written summary
Sugar and K were the major solutes contributing to osmotic potential in sorghum.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e3“Sugar and K were identified as the major solutes contributing to osmotic potential in sorghum”
Claim · model-written summary
Sugar concentration in cell sap increased by 37·4% under water deficit conditions.
- Treatment
- water deficit conditionse4
- Compound
- Sugare4
- Outcome
- concentrations in cell sape4
- Direction
- increasede4
- Value
- 37·4%e4
- Comparator
- irrigated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e4“Sugar and K concentrations in cell sap increased by 37·4% and 27%, respectively, under water deficit conditions in favour of decreasing osmotic potential”
Claim · model-written summary
K concentration in cell sap increased by 27% under water deficit conditions.
- Treatment
- water deficit conditionse4
- Compound
- Ke4
- Outcome
- concentrations in cell sape4
- Direction
- increasede4
- Value
- 27%e4
- Comparator
- irrigated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e4“Sugar and K concentrations in cell sap increased by 37·4% and 27%, respectively, under water deficit conditions in favour of decreasing osmotic potential”
Claim · model-written summary
Stomatal and cuticular conductance were lower in the non-irrigated plants.
- Treatment
- non-irrigatede5
- Outcome
- Stomatal conductance and cuticular conductancee5
- Direction
- lowere5
- Comparator
- irrigated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e5“Stomatal conductance and cuticular conductance were lower in the non-irrigated plants”
Claim · model-written summary
Cell membrane stability differed widely among the four sorghum cultivars.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e6“A wide range in CMS among four cultivars was observed”
Claim · model-written summary
Cell membrane stability increased with increasing water deficit.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e7“CMS increased with increasing water deficits”
Claim · model-written summary
Epicuticular wax load increased on leaves of water-deficient plants.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e1“EWL increased on leaves of water deficient plants and was positively correlated with cuticular conductance and CMS”
Claim · model-written summary
Epicuticular wax load was positively correlated with cuticular conductance and cell membrane stability.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e1“EWL increased on leaves of water deficient plants and was positively correlated with cuticular conductance and CMS”
Claim · model-written summary
Membrane phospholipid content increased in water-stressed plants.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e1“Membrane phospholipid content increased in water-stressed plants”
Claim · model-written summary
Cell membrane stability was influenced by epicuticular wax load, cuticular thickness and osmotic concentration of leaf tissues.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e1“CMS as measured by the PEG test, was influenced by EWL, cuticular thickness, and osmotic concentration of leaf tissues”
Claim · model-written summary
Cultivars that kept higher membrane stability, wax load and turgor under water deficit were identified as drought tolerant.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field experiment was conducted with a non-irrigated water stress treatment and an irrigated control using four sorghum (Sorghum bicolor L. Moench) cultivars”
e1“The cultivars which maintained higher CMS, higher EWL, lower cuticular conductance, higher turgor and higher osmotic adjustment under water deficit conditions were identified as drought tolerant”
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See all 7 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.