Abstract
Heat stress is associated with a reduction in pollen germination and seed setting of rice. Brassinosteroids have been reported to counteract some stresses on plant growth and development. We investigated the effects of an exogenously applied brassinosteroid, (24-epibrassinolide; EBR) and an ecdysone analogue (7,8-dihydro-8α-20-hydroxyecdysone; DHECD) against heat stress on pollen viability of rice (Oryza sativa L.) cv. Pathum Thani 1. The plants were treated with either EBR or DHECD and exposed to a day/night heat stress regime of 40/30°C for 7 days. The results demonstrated that 0.001 µM of either chemical was effective for increasing pollen viability and reducing pollen bursting. Furthermore, these chemical treatments conferred resistance to heat stress in in vivo pollen germination and seed setting. Consequently, these results suggest EBR and DHECD should alleviate the detrimental effects of heat stress by improving pollen germination and seed setting and enable rice to withstand high temperature stress.
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Claims 6
Claim · model-written summary
EBR increased rice pollen viability under heat stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.001 µM of either chemical was effective for increasing pollen viability and reducing pollen bursting”
t0“rice”
e1“EBR or DHECD”
Claim · model-written summary
DHECD increased rice pollen viability under heat stress.
- Taxon
- rice
Oryza sativat0 - Treatment
- DHECDe1
- Outcome
- pollen viabilitye0
- Direction
- increasinge0
- Value
- 0.001 µMe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.001 µM of either chemical was effective for increasing pollen viability and reducing pollen bursting”
t0“rice”
e1“EBR or DHECD”
Claim · model-written summary
EBR reduced rice pollen bursting under heat stress.
- Taxon
- riceOryza sativat0
- Treatment
- EBRe1
- Outcome
- pollen burstinge0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.001 µM of either chemical was effective for increasing pollen viability and reducing pollen bursting”
t0“rice”
e1“EBR or DHECD”
Claim · model-written summary
DHECD reduced rice pollen bursting under heat stress.
- Taxon
- riceOryza sativat0
- Treatment
- DHECDe1
- Outcome
- pollen burstinge0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.001 µM of either chemical was effective for increasing pollen viability and reducing pollen bursting”
t0“rice”
e1“EBR or DHECD”
Claim · model-written summary
EBR conferred heat resistance in rice pollen germination and seed setting.
- Taxon
- riceOryza sativat0
- Treatment
- EBRe1
- Outcome
- in vivo pollen germination and seed settinge0
- Direction
- conferred resistancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these chemical treatments conferred resistance to heat stress in in vivo pollen germination and seed setting”
t0“rice”
e1“EBR or DHECD”
Claim · model-written summary
DHECD conferred heat resistance in rice pollen germination and seed setting.
- Taxon
- riceOryza sativat0
- Treatment
- DHECDe1
- Outcome
- in vivo pollen germination and seed settinge0
- Direction
- conferred resistancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these chemical treatments conferred resistance to heat stress in in vivo pollen germination and seed setting”
t0“rice”
e1“EBR or DHECD”
The same questions in other papers
24-epi-brassinolide · yield · Oryza sativa (rice)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
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.