Abstract
Cuticle is the major transpiration barrier that restricts non-stomatal water loss and is closely associated with plant drought tolerance. Although multiple efforts have been made, it remains controversial what factors shape up the cuticular transpiration barrier. Previously, we found that the cuticle from the tender tea leaf was mainly constituted by very-long-chain-fatty-acids and their derivatives while alicyclic compounds dominate the mature tea leaf cuticle. The presence of two contrasting cuticle within same branch offered a unique system to investigate this question. In this study, tea seedlings were subjected to water deprivation treatment, cuticle structures and wax compositions from the tender leaf and the mature leaf were extensively measured and compared. We found that cuticle wax coverage, thickness, and osmiophilicity were commonly increased from both leaves. New waxes species were specifically induced by drought; the composition of existing waxes was remodeled; the chain length distributions of alkanes, esters, glycols, and terpenoids were altered in complex manners. Drought treatment significantly reduced leaf water loss rates. Wax biosynthesis-related gene expression analysis revealed dynamic expression patterns dependent on leaf maturity and the severity of drought. These data suggested that drought stress-induced structural and compositional cuticular modifications improve cuticle water barrier property. In addition, we demonstrated that cuticle from the tender leaf and the mature leaf were modified through both common and distinct modes.
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 9
Claim · model-written summary
Drought increased wax coverage, thickness and osmiophilicity in both leaf stages.
- Taxon
- teat0
- Organ / stage
- both leavese0
- Treatment
- Droughtt0
- Outcome
- cuticle wax coverage, thickness, and osmiophilicitye0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“We found that cuticle wax coverage, thickness, and osmiophilicity were commonly increased from both leaves”
e1“We found that cuticle wax coverage, thickness, and osmiophilicity were commonly increased from both leaves”
t0“Drought stress modify cuticle of tender tea leaf and mature leaf”
Claim · model-written summary
Drought induced new wax species.
Not reportedComparator
Verbatim
e0“New waxes species were specifically induced by drought”
e1“New waxes species were specifically induced by drought”
t0“tea leaf”
Claim · model-written summary
Drought remodeled existing wax composition.
Not reportedComparator
Verbatim
e0“the composition of existing waxes was remodeled”
e1“the composition of existing waxes was remodeled”
t0“Drought stress modify cuticle of tender tea leaf and mature leaf”
Claim · model-written summary
Drought altered chain-length distributions of alkanes, esters and glycols.
- Taxon
- teat0
- Treatment
- Droughtt0
- Outcome
- chain length distributions of alkanes, esters, glycolse0
- Direction
- altered in complex mannerse0
Not reportedComparator
Verbatim
e0“the chain length distributions of alkanes, esters, glycols, and terpenoids were altered in complex manners”
e1“the chain length distributions of alkanes, esters, glycols, and terpenoids were altered in complex manners”
t0“Drought stress modify cuticle of tender tea leaf and mature leaf”
Claim · model-written summary
Drought altered terpenoid chain-length distributions.
Not reportedComparator
Verbatim
e0“the chain length distributions of alkanes, esters, glycols, and terpenoids were altered in complex manners”
e1“the chain length distributions of alkanes, esters, glycols, and terpenoids were altered in complex manners”
t0“Drought stress modify cuticle of tender tea leaf and mature leaf”
Claim · model-written summary
Drought significantly reduced leaf water loss rates.
- Taxon
- teat0
- Treatment
- Drought treatmente0
- Outcome
- leaf water loss ratese0
- Direction
- significantly reducede0
Not reportedComparator
Verbatim
e0“Drought treatment significantly reduced leaf water loss rates”
e1“Drought treatment significantly reduced leaf water loss rates”
t0“tea leaf”
Claim · model-written summary
Wax biosynthesis gene expression varied with leaf maturity and drought severity.
- Taxon
- teat0
- Organ / stage
- leaf maturitye0
- Treatment
- severity of droughte0
- Gene
- Wax biosynthesis-related genee0
- Outcome
- dynamic expression patternse0
Not reportedDirection
Verbatim
e0“Wax biosynthesis-related gene expression analysis revealed dynamic expression patterns dependent on leaf maturity and the severity of drought”
e1“Wax biosynthesis-related gene expression analysis revealed dynamic expression patterns dependent on leaf maturity and the severity of drought”
t0“tea leaf”
Claim · model-written summary
Drought-induced cuticle changes improved water-barrier properties according to the authors.
Verbatim
e0“drought stress-induced structural and compositional cuticular modifications improve cuticle water barrier property”
e1“drought stress-induced structural and compositional cuticular modifications improve cuticle water barrier property”
t0“tea leaf”
Claim · model-written summary
Tender and mature leaf cuticles changed through common and distinct modes.
Verbatim
e0“cuticle from the tender leaf and the mature leaf were modified through both common and distinct modes”
e1“cuticle from the tender leaf and the mature leaf were modified through both common and distinct modes”
t0“tea leaf”
The same questions in other papers
drought · physiology: water · Camellia sinensis (black tea)Positive and negative results
6 in the opposite direction
- negative
- negative
- negative
3 papers more in this group
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.