Abstract
To gain more insight into the physiological function of shade and how shade affects leaf size, we investigated the growth, leaf anatomical structure, hormones and genes expressions in soybean. Soybean seeds were sown in plastic pots and were allowed to germinate and grow for 30 days under shade or full sunlight conditions. Shade treated plants showed significantly increase on stem length and petiole length, and decrease on stem diameters, shoot biomass and its partition to leaf also were significantly lower than that in full sunlight. Smaller and thinner on shade treated leaves than corresponding leaves on full sunlight plants. The decreased leaf size caused by shade was largely attributable to cell proliferation in young leaves and both cell proliferation and enlargement in old leaves. Shade induced the expression of a set of genes related to cell proliferation and/or enlargement, but depended on the developmental stage of leaf. Shade significantly increased the auxin and gibberellin content, and significantly decreased the cytokinin content in young, middle and old leaves. Taken together, these results indicated that shade inhibited leaf size by controlling cell proliferation and enlargement, auxin, gibberellin and cytokinin may play important roles in this process.
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Claims 8
Claim · model-written summary
Shade increased stem and petiole length.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Shadee0
- Outcome
- stem length and petiole lengthe0
- Direction
- increasee0
- Comparator
- full sunlighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade treated plants showed significantly increase on stem length and petiole length, and decrease on stem diameters, shoot biomass and its partition to leaf also were significantly lower than that in full sunlight”
t0“Soybean”
Claim · model-written summary
Shade lowered stem diameter, shoot biomass and its leaf partition.
- Taxon
- soybeanGlycine maxt0
- Treatment
- shadee0
- Outcome
- stem diameters, shoot biomass and its partition to leafe0
- Direction
- lowere0
- Comparator
- full sunlighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade treated plants showed significantly increase on stem length and petiole length, and decrease on stem diameters, shoot biomass and its partition to leaf also were significantly lower than that in full sunlight”
t0“Soybean”
Claim · model-written summary
Shade produced smaller and thinner leaves.
- Taxon
- soybeanGlycine maxt0
- Treatment
- shadee0
- Outcome
- leavese0
- Direction
- Smaller and thinnere0
- Comparator
- full sunlighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Smaller and thinner on shade treated leaves than corresponding leaves on full sunlight plants.”
t0“Soybean”
Claim · model-written summary
Reduced leaf size under shade was attributed to cell proliferation in young leaves.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- young leavese0
- Treatment
- shadee0
- Outcome
- decreased leaf sizee0
- Qualifier
- cell proliferatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decreased leaf size caused by shade was largely attributable to cell proliferation in young leaves”
t0“Soybean”
Claim · model-written summary
Reduced leaf size under shade was attributed to cell proliferation and enlargement in old leaves.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- old leavese0
- Outcome
- cell proliferation and enlargemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both cell proliferation and enlargement in old leaves”
t0“Soybean”
Claim · model-written summary
Shade induced expression of proliferation and enlargement related genes, depending on leaf developmental stage.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Shadee0
- Outcome
- expression of a set of genes related to cell proliferation and/or enlargemente0
- Direction
- inducede0
- Qualifier
- depended on the developmental stage of leafe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade induced the expression of a set of genes related to cell proliferation and/or enlargement, but depended on the developmental stage of leaf.”
t0“Soybean”
Claim · model-written summary
Shade increased auxin and gibberellin content.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Shadee0
- Outcome
- auxin and gibberellin contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade significantly increased the auxin and gibberellin content”
t0“Soybean”
Claim · model-written summary
Shade decreased cytokinin content in young, middle and old leaves.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- young, middle and old leavese0
- Treatment
- Shadee0
- Outcome
- cytokinin contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade significantly increased the auxin and gibberellin content, and significantly decreased the cytokinin content in young, middle and old leaves”
t0“Soybean”
The same questions in other papers
shade · growth · Glycine max (soybean)Results differ
11 papers in the same direction as this paper · 26 in the opposite direction
- no effect
- negative
- positive
34 papers more in this group
See all 38 papers →shade · molecular: expression · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
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.