Abstract
Understanding the growth and physiological responses of rice to upland conditions would be helpful for designing treatments to improve the tolerance of rice under a rainfed system. The objective of this study was to investigate the initiation,elongation and membrane stability of seminal, lateral and adventitious roots of upland rice after 9-d upland condition treatment. Compared with control roots under waterlogged conditions, upland water deficiency conditions favor seminal and lateral root growth over adventitious root growth by accelerating seminal root elongation, promoting lateral root initiation and elongation, and reducing the elongation and number of adventitious roots. Enhanced total root number and length resulted in increase of total root dry weight and thereby increasing the root-to-shoot ratio. Organic compound leakage from seminal root tips and adventitious roots increased progressively to some extent with upland culture duration, while significant increases in seminal root tips were the consequence of loss of membrane integrity caused by the upland-condition enhanced growth.
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Claims 7
Claim · model-written summary
Upland deficiency accelerated seminal root elongation.
- Taxon
- rice
Oryza sativat0 - Treatment
- upland water deficiency conditionse0
- Outcome
- seminal root elongatione0
- Direction
- acceleratinge0
- Comparator
- control roots under waterlogged conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Compared with control roots under waterlogged conditions, upland water deficiency conditions favor seminal and lateral root growth over adventitious root growth by accelerating seminal root elongation”
Claim · model-written summary
Upland deficiency promoted lateral root initiation and elongation.
- Taxon
- riceOryza sativat0
- Treatment
- upland water deficiency conditionse0
- Outcome
- lateral root initiation and elongatione0
- Direction
- promotinge0
- Comparator
- control roots under waterlogged conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Compared with control roots under waterlogged conditions, upland water deficiency conditions favor seminal and lateral root growth over adventitious root growth by accelerating seminal root elongation, promoting lateral root initiation and elongation”
Claim · model-written summary
Upland deficiency reduced adventitious root elongation and number.
- Taxon
- riceOryza sativat0
- Treatment
- upland water deficiency conditionse0
- Outcome
- elongation and number of adventitious rootse0
- Direction
- reducinge0
- Comparator
- control roots under waterlogged conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Compared with control roots under waterlogged conditions, upland water deficiency conditions favor seminal and lateral root growth over adventitious root growth by accelerating seminal root elongation, promoting lateral root initiation and elongation, and reducing the elongation and number of adventitious roots”
Claim · model-written summary
Greater root number and length increased total root dry weight.
- Taxon
- riceOryza sativat0
- Organ / stage
- roote0
- Outcome
- total root dry weighte0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Enhanced total root number and length resulted in increase of total root dry weight”
Claim · model-written summary
Increased root dry weight raised the root-to-shoot ratio.
- Taxon
- riceOryza sativat0
- Organ / stage
- roote0
- Outcome
- root-to-shoot ratioe0
- Direction
- increasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“increase of total root dry weight and thereby increasing the root-to-shoot ratio”
Claim · model-written summary
Organic compound leakage from seminal tips and adventitious roots increased with upland culture duration.
- Taxon
- riceOryza sativat0
- Treatment
- upland culture duratione0
- Outcome
- Organic compound leakage from seminal root tips and adventitious rootse0
- Direction
- increased progressivelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Organic compound leakage from seminal root tips and adventitious roots increased progressively to some extent with upland culture duration”
Claim · model-written summary
Significantly greater leakage from seminal root tips was attributed to loss of membrane integrity during upland enhanced growth.
- Taxon
- riceOryza sativat0
- Outcome
- significant increases in seminal root tipse0
- Direction
- increasese0
- Qualifier
- loss of membrane integritye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“significant increases in seminal root tips were the consequence of loss of membrane integrity caused by the upland-condition enhanced growth”