Abstract
A pot experiment was conducted to study the effects of water deficit at seedling stage on the root development and anatomical structure of maize. Four treatments were installed, i.e., 75%-85% of field capacity (control), 65%-75% of field capacity (light deficit), 55%-65% of field capacity (moderate deficit), and 45%-55% of field capacity (heavy deficit). Drought stress inhibited the plant growth. With increasing drought stress, the root length, diameter, and total biomass reduced, while the root vigor, root/shoot ratio, and root apex polysaccharide content increased. Under moderate water deficit, the branch root hair length, root hair density, and total length of root hair reached to the maximum. Anatomical observation showed that the decrease of root diameter was mainly due to the decrease of root central cylinder area and of root vessel diameter. No significant difference was observed in the root vessel number among the treatments, but the root vessel wall became irregular under water deficit. The increase of root apex polysaccharide content mainly occurred in the epidermal cells and pileorhiza cells. In epidermis cells, the polysaccharide was mainly in dissociation, while in pileorhiza cells, polysaccharide was mainly as starch grains. In sum, under water deficit, maize root could alter its vessel structure, increase the polysaccharide content in epidermal cells and pileorhiza cells, and expand the total surface area of root hair to enhance the water-absorbing ability of hair root, and to strengthen the drought resistance of maize. However, with the increase of water deficit, root hair didn't have unrestrictive growth, while in adverse, its growth was inhibited or damaged under severe drought.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 12
Claim · model-written summary
Drought inhibited maize growth.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress inhibited the plant growth.”
t0“maize”
Claim · model-written summary
Increasing drought reduced root length, diameter and total biomass.
- Treatment
- increasing drought stresse0
- Outcome
- root length, diameter, and total biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing drought stress, the root length, diameter, and total biomass reduced”
t0“maize”
Claim · model-written summary
Increasing drought increased root vigor, root/shoot ratio and root apex polysaccharide content.
- Treatment
- increasing drought stresse0
- Outcome
- root vigor, root/shoot ratio, and root apex polysaccharide contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing drought stress, the root length, diameter, and total biomass reduced, while the root vigor, root/shoot ratio, and root apex polysaccharide content increased.”
t0“maize”
Claim · model-written summary
Moderate water deficit maximized branch root hair length, density and total root hair length.
- Treatment
- moderate water deficite0
- Outcome
- branch root hair length, root hair density, and total length of root haire0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under moderate water deficit, the branch root hair length, root hair density, and total length of root hair reached to the maximum.”
t0“maize”
Claim · model-written summary
Root diameter decreased mainly because central cylinder area and vessel diameter decreased.
- Outcome
- root diametere0
- Direction
- decreasee0
- Qualifier
- decrease of root central cylinder area and of root vessel diametere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease of root diameter was mainly due to the decrease of root central cylinder area and of root vessel diameter”
t0“maize”
Claim · model-written summary
Root vessel number did not differ significantly among treatments.
- Treatment
- treatmentse0
- Outcome
- root vessel numbere0
- Direction
- No significant differencee0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant difference was observed in the root vessel number among the treatments”
e1“Four treatments were installed, i.e., 75%-85% of field capacity (control), 65%-75% of field capacity (light deficit), 55%-65% of field capacity (moderate deficit), and 45%-55% of field capacity (heavy deficit).”
t0“maize”
Claim · model-written summary
Root vessel walls became irregular under water deficit.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root vessel wall became irregular under water deficit”
t0“maize”
Claim · model-written summary
Root apex polysaccharide increases occurred mainly in epidermal and pileorhiza cells.
- Organ / stage
- epidermal cells and pileorhiza cellse0
- Outcome
- root apex polysaccharide contente0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase of root apex polysaccharide content mainly occurred in the epidermal cells and pileorhiza cells.”
t0“maize”
Claim · model-written summary
Polysaccharide was mainly dissociated in epidermis cells.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In epidermis cells, the polysaccharide was mainly in dissociation”
t0“maize”
Claim · model-written summary
Polysaccharide was mainly starch grains in pileorhiza cells.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in pileorhiza cells, polysaccharide was mainly as starch grains”
t0“maize”
Claim · model-written summary
Root adjustments under water deficit were interpreted as enhancing water absorption and drought resistance.
- Outcome
- water-absorbing ability of hair roote0
- Direction
- enhancee0
- Qualifier
- alter its vessel structure, increase the polysaccharide content in epidermal cells and pileorhiza cells, and expand the total surface area of root haire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under water deficit, maize root could alter its vessel structure, increase the polysaccharide content in epidermal cells and pileorhiza cells, and expand the total surface area of root hair to enhance the water-absorbing ability of hair root, and to strengthen the drought resistance of maize.”
Claim · model-written summary
Severe drought inhibited or damaged root hair growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the increase of water deficit, root hair didn't have unrestrictive growth, while in adverse, its growth was inhibited or damaged under severe drought.”
t0“maize”
The same questions in other papers
drought · growth · Zea mays (maize)Positive and negative results
76 papers in the same direction as this paper · 306 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- negative
381 papers more in this group
See all 385 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.