Abstract
Introduction In high-latitude area, climate change has brought about recurrent chilling stress that adversely impacts the sustainable production of rice and alters the distribution of carbon (C) and nitrogen (N) in paddy ecosystems. A comprehensive understanding of how the paddy ecosystem’s C and N allocation responds to low-temperature stress during critical growth stages remains elusive. Methods A rice pot experiment of two varieties combined with 13 C and 15 N isotope labelling method was conducted to evaluate how low temperature stress at heading stage affects rice yield, and above- and belowground C and N partitioning. Results and Discussion Low-temperature stress significantly reduced rice grain yield of JN809 (sensitive to low-temperature stress) and J88 (tolerant to low-temperature stress) varieties by 27.6% and 21.4%, respectively, This stress tendency increased C and N accumulation in rice stems and leaves, while concurrently decreasing C and N accumulation in panicles. Specifically, under low-temperature stress, the 13 C isotope content in stems and leaves was found to be 14.0% and 19.0% higher than in the control treatment, while the 13 C and 15 N isotope contents in their panicles were 29.3% and 22.5% lower, respectively. The low-temperature tolerant variety (J88) demonstrated a reduced effect of low-temperature stress on rice yield and C, N allocation due to efficient resource reallocation and stress tolerance mechanisms. The findings of this study provide a foundation for developing rice breeding and cultivation techniques that can enhance rice resilience and adaptability to climate change. Additionally, it informs strategies to optimize C and N sequestration practices in rice fields, ensuring high yields and efficient resource utilization.
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Claims 11
Claim · model-written summary
Cold stress reduced JN809 grain yield by 27.6%.
- Taxon
- rice
Oryza sativat0 - Material
- JN809e0
- Treatment
- low-temperature stresst1
- Outcome
- rice grain yielde0
- Direction
- reducede0
- Value
- 27.6%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“Low-temperature stress significantly reduced rice grain yield of JN809 (sensitive to low-temperature stress) and J88 (tolerant to low-temperature stress) varieties by 27.6% and 21.4%, respectively”
Claim · model-written summary
Cold stress reduced J88 grain yield by 21.4%.
- Taxon
- riceOryza sativat0
- Material
- J88e0
- Treatment
- low-temperature stresst1
- Outcome
- rice grain yielde0
- Direction
- reducede0
- Value
- 21.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“Low-temperature stress significantly reduced rice grain yield of JN809 (sensitive to low-temperature stress) and J88 (tolerant to low-temperature stress) varieties by 27.6% and 21.4%, respectively”
Claim · model-written summary
Cold stress increased C and N accumulation in stems and leaves.
- Taxon
- riceOryza sativat0
- Organ / stage
- stems and leavese0
- Treatment
- low-temperature stresst1
- Outcome
- C and N accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“This stress tendency increased C and N accumulation in rice stems and leaves, while concurrently decreasing C and N accumulation in panicles”
Claim · model-written summary
Cold stress increased N accumulation in stems and leaves.
- Taxon
- riceOryza sativat0
- Organ / stage
- stems and leavese0
- Treatment
- low-temperature stresst1
- Outcome
- N accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“This stress tendency increased C and N accumulation in rice stems and leaves, while concurrently decreasing C and N accumulation in panicles”
Claim · model-written summary
Cold stress decreasing C and N accumulation in panicles.
- Taxon
- riceOryza sativat0
- Organ / stage
- paniclese0
- Treatment
- low-temperature stresst1
- Outcome
- C and N accumulatione0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“This stress tendency increased C and N accumulation in rice stems and leaves, while concurrently decreasing C and N accumulation in panicles”
Claim · model-written summary
Cold stress decreasing N accumulation in panicles.
- Taxon
- riceOryza sativat0
- Organ / stage
- paniclese0
- Treatment
- low-temperature stresst1
- Outcome
- N accumulatione0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“This stress tendency increased C and N accumulation in rice stems and leaves, while concurrently decreasing C and N accumulation in panicles”
Claim · model-written summary
Cold stress changed 13 C isotope content in stems and leaves by 14.0%.
- Taxon
- riceOryza sativat0
- Organ / stage
- stems and leavese0
- Treatment
- low-temperature stresst1
- Outcome
- 13 C isotope contente0
- Direction
- highere0
- Value
- 14.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“under low-temperature stress, the 13 C isotope content in stems and leaves was found to be 14.0% and 19.0% higher than in the control treatment, while the 13 C and 15 N isotope contents in their panicles were 29.3% and 22.5% lower, respectively”
Claim · model-written summary
Cold stress changed 13 C isotope content in stems and leaves by 19.0%.
- Taxon
- riceOryza sativat0
- Organ / stage
- stems and leavese0
- Treatment
- low-temperature stresst1
- Outcome
- 13 C isotope contente0
- Direction
- highere0
- Value
- 19.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“under low-temperature stress, the 13 C isotope content in stems and leaves was found to be 14.0% and 19.0% higher than in the control treatment, while the 13 C and 15 N isotope contents in their panicles were 29.3% and 22.5% lower, respectively”
Claim · model-written summary
Cold stress changed 13 C and 15 N isotope contents in panicles by 29.3%.
- Taxon
- riceOryza sativat0
- Organ / stage
- paniclese0
- Treatment
- low-temperature stresst1
- Outcome
- 13 C and 15 N isotope contentse0
- Direction
- lowere0
- Value
- 29.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“under low-temperature stress, the 13 C isotope content in stems and leaves was found to be 14.0% and 19.0% higher than in the control treatment, while the 13 C and 15 N isotope contents in their panicles were 29.3% and 22.5% lower, respectively”
Claim · model-written summary
Cold stress changed 15 N isotope contents in panicles by 22.5%.
- Taxon
- riceOryza sativat0
- Organ / stage
- paniclese0
- Treatment
- low-temperature stresst1
- Outcome
- 15 N isotope contentse0
- Direction
- lowere0
- Value
- 22.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
t1“low-temperature stress”
e0“under low-temperature stress, the 13 C isotope content in stems and leaves was found to be 14.0% and 19.0% higher than in the control treatment, while the 13 C and 15 N isotope contents in their panicles were 29.3% and 22.5% lower, respectively”
Claim · model-written summary
J88 showed a smaller cold stress effect on yield and carbon and nitrogen allocation.
- Taxon
- riceOryza sativat0
- Material
- J88e0
- Outcome
- reduced effect of low-temperature stress on rice yield and C, N allocatione0
- Qualifier
- efficient resource reallocation and stress tolerance mechanismse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The low-temperature tolerant variety (J88) demonstrated a reduced effect of low-temperature stress on rice yield and C, N allocation due to efficient resource reallocation and stress tolerance mechanisms”
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See all 21 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.