Abstract
Abstract Fibrous roots of four citrus hybrids and parent rootstocks from which the hybrids were generated, all selected for their different Cl − exclusion abilities, were assayed for phospholipid, galactolipid and free 4‐desmethylsterol content. There was no correlation between a plant's ability to exclude Cl − and the level of either phospholipid, galactolipid, or total free sterol in the roots of control plants. However, an inverse correlation was established between the ratio of phospholipid to free sterol in control roots and total leaf Cl − levels of plants treated with 50 mol m −3 NaCl for 56 d. With the exception of a significant decrease in hybrid 80‐05‐05, galactolipid levels were unaffected by salt treatment. Phospholipid levels were significantly increased in two parent rootstocks viz. Trifoliate orange ( Poncirus trifoliata (L.). Raf.) and Carrizo citrange ( Citrus sinensis (L.) Osbeck × P. trifoliata ) and one hybrid (80‐02‐08) but were otherwise unchanged by salt treatment. Free sterol levels were significantly increased by salt treatment in all of the better Cl − excluders except Carrizo citrange i.e. in Rangpur lime ( Citrus reticulata Blanco var. austera hybrid?), Cleopatra mandarin ( Citrus reticulata Blanco) and all hybrids except 80–05–13. In all genotypes examined, salt‐treatment resulted in a significant decrease in the ratio of sitosterol to stigmasterol reflecting, primarily, an increase in the stigmasterol level. The two poorer Cl − excluders (Trifoliate orange and hybrid 80–05–13) both underwent a significant decrease in the ratio of ‘more planar’ to ‘less planar’ sterols. The inverse correlation between the phospholipid to free sterol ratio of control plants and leaf Cl − level of salt treated plants suggests that this ratio has the potential to be used as a biochemical marker of Cl − exclusion ability in citrus.
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Claims 9
Claim · model-written summary
Control-plant root levels of phospholipid, galactolipid and total free sterol were not correlated with citrus chloride exclusion ability
- Material
- citrus genotypest0
- Organ / stage
- rootse1
- Outcome
- the level of either phospholipid, galactolipid, or total free sterole1
- Direction
- no_changeinferrede1
CitrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phospholipid, galactolipid and free sterol composition of fibrous roots from citrus genotypes differing in chloride exclusion ability”
e1“the level of either phospholipid, galactolipid, or total free sterol in the roots of control plants”
Claim · model-written summary
The ratio of phospholipid to free sterol in control roots was inversely correlated with total leaf Cl of salt-treated citrus plants
- Organ / stage
- control rootse2
- Compound
- phospholipid to free sterole2
- Outcome
- total leaf Cle2
- Direction
- inversee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phospholipid, galactolipid and free sterol composition of fibrous roots from citrus genotypes differing in chloride exclusion ability”
e2“an inverse correlation was established between the ratio of phospholipid to free sterol in control roots and total leaf Cl”
Claim · model-written summary
Galactolipid levels were unaffected by salt treatment in citrus roots
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phospholipid, galactolipid and free sterol composition of fibrous roots from citrus genotypes differing in chloride exclusion ability”
e3“galactolipid levels were unaffected by salt treatment”
Claim · model-written summary
Salt treatment significantly decreased galactolipid levels in hybrid 80-05-05
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phospholipid, galactolipid and free sterol composition of fibrous roots from citrus genotypes differing in chloride exclusion ability”
e4“With the exception of a significant decrease in hybrid 80‐05‐05, galactolipid levels were unaffected by salt treatment”
Claim · model-written summary
Salt treatment significantly increased phospholipid levels in the parent rootstocks Trifoliate orange and Carrizo citrange and in one hybrid
- Material
- Trifoliate orangee5
- Treatment
- salt treatmente6
- Outcome
- Phospholipid levelse5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phospholipid, galactolipid and free sterol composition of fibrous roots from citrus genotypes differing in chloride exclusion ability”
e5“Phospholipid levels were significantly increased in two parent rootstocks viz. Trifoliate orange ( Poncirus trifoliata (L.). Raf.) and Carrizo citrange”
e6“but were otherwise unchanged by salt treatment”
Claim · model-written summary
Phospholipid levels were otherwise unchanged by salt treatment in the other citrus genotypes
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phospholipid, galactolipid and free sterol composition of fibrous roots from citrus genotypes differing in chloride exclusion ability”
e5“Phospholipid levels were significantly increased in two parent rootstocks viz. Trifoliate orange ( Poncirus trifoliata (L.). Raf.) and Carrizo citrange”
e6“but were otherwise unchanged by salt treatment”
Claim · model-written summary
Salt treatment significantly increased free sterol levels in all of the better chloride excluders except Carrizo citrange
- Treatment
- salt treatmente7
- Outcome
- Free sterol levelse7
- Direction
- increasede7
- Qualifier
- except Carrizo citrangee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phospholipid, galactolipid and free sterol composition of fibrous roots from citrus genotypes differing in chloride exclusion ability”
e7“Free sterol levels were significantly increased by salt treatment in all of the better Cl”
e2“except Carrizo citrange”
Claim · model-written summary
Salt treatment significantly decreased the ratio of sitosterol to stigmasterol in all genotypes examined, reflecting increased stigmasterol
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phospholipid, galactolipid and free sterol composition of fibrous roots from citrus genotypes differing in chloride exclusion ability”
e1“In all genotypes examined, salt‐treatment resulted in a significant decrease in the ratio of sitosterol to stigmasterol”
Claim · model-written summary
Salt treatment significantly decreased the ratio of more planar to less planar sterols in the two poorer chloride excluders, Trifoliate orange and hybrid 80-05-13
- Material
- Trifoliate orangee2
- Treatment
- salt‐treatmente1
- Outcome
- ratio of ‘more planar’ to ‘less planar’ sterolse2
- Direction
- decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phospholipid, galactolipid and free sterol composition of fibrous roots from citrus genotypes differing in chloride exclusion ability”
e1“In all genotypes examined, salt‐treatment resulted in a significant decrease in the ratio of sitosterol to stigmasterol”
e2“The two poorer Cl − excluders (Trifoliate orange and hybrid 80–05–13) both underwent a significant decrease in the ratio of ‘more planar’ to ‘less planar’ sterols”
The same questions in other papers
salinity · molecular: metabolites · CitrusResults agree
5 papers in the same direction as this paper
- no effect
- negative
- negative
2 papers more in this group
See all 6 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.