Abstract
ABSTRACT Improving the biomass and nutritional quality of Brassica napus is important for its breeding and resource conservation, but there are few studies on the effects of high altitude on its biomass and quality. In this study, 27 varieties of Brassica napus were cultivated both at 1600 m and 150 m altitudes to investigate the effect of different altitudes in the biomass and quality traits of B. napus . At high altitude, all B. napus varieties exhibited decreased picking period, reduced fresh and dry weights, diminished stem length and diameter, as well as lowered nitrogen (N), phosphorus (P), and kalium (K) contents. The soluble sugar and cellulose contents of some varieties decreased, while ascorbic acid and protein increased by 74% and 85%, respectively. Furthermore, histology microscopical observation showed cell size increased and cell density decreased in the shoot apical meristem (SAM) after bolting and at high altitude, compared to those cells before bolting and at low altitude. Transcriptome analysis showed that sucrose phosphate synthase ( SPS ), sucrose synthase ( SUS ) , fructose‐1,6‐bisphosphate aldolase ( FBA1 ), and alpha‐galactosidase ( AGAL2 ) genes were significantly up‐regulated during the after‐bolting period at different altitude. This study will be helpful to further understand the influence of high altitude ecosystem on biomass and quality for Brassica napus resource and evolution.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 11
Claim · model-written summary
At high altitude, B. napus picking period decreased.
- Taxon
- B. napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Treatment
- high altitudee0
- Outcome
- picking periode0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“At high altitude, all B. napus varieties exhibited decreased picking period, reduced fresh and dry weights, diminished stem length and diameter, as well as lowered nitrogen (N), phosphorus (P), and kalium (K) contents.”
Claim · model-written summary
At high altitude, B. napus fresh and dry weights decreased.
- Taxon
- B. napusBrassica napuse0
- Treatment
- high altitudee0
- Outcome
- fresh and dry weightse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At high altitude, all B. napus varieties exhibited decreased picking period, reduced fresh and dry weights, diminished stem length and diameter, as well as lowered nitrogen (N), phosphorus (P), and kalium (K) contents.”
Claim · model-written summary
At high altitude, B. napus stem length and diameter decreased.
- Taxon
- B. napusBrassica napuse0
- Treatment
- high altitudee0
- Outcome
- stem length and diametere0
- Direction
- diminishede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At high altitude, all B. napus varieties exhibited decreased picking period, reduced fresh and dry weights, diminished stem length and diameter, as well as lowered nitrogen (N), phosphorus (P), and kalium (K) contents.”
Claim · model-written summary
At high altitude, B. napus nitrogen (N), phosphorus (P), and kalium (K) contents decreased.
- Taxon
- B. napusBrassica napuse0
- Treatment
- high altitudee0
- Outcome
- nitrogen (N), phosphorus (P), and kalium (K) contentse0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At high altitude, all B. napus varieties exhibited decreased picking period, reduced fresh and dry weights, diminished stem length and diameter, as well as lowered nitrogen (N), phosphorus (P), and kalium (K) contents.”
Claim · model-written summary
Soluble sugar and cellulose content decreased in some varieties.
Not reportedTaxonTreatmentComparator
Verbatim
e0“The soluble sugar and cellulose contents of some varieties decreased”
Claim · model-written summary
ascorbic acid increased by 74%.
Not reportedTaxonTreatmentComparator
Verbatim
e0“ascorbic acid and protein increased by 74% and 85%, respectively”
Claim · model-written summary
protein increased by 85%.
Not reportedTaxonTreatmentComparator
Verbatim
e0“ascorbic acid and protein increased by 74% and 85%, respectively”
Claim · model-written summary
Shoot apical meristem cell size increased after bolting and at high altitude.
- Organ / stage
- shoot apical meristem (SAM)e0
- Treatment
- after bolting and at high altitudee0
- Outcome
- cell sizee0
- Direction
- increasede0
- Comparator
- before bolting and at low altitudee0
Not reportedTaxon
Verbatim
e0“cell size increased and cell density decreased in the shoot apical meristem (SAM) after bolting and at high altitude, compared to those cells before bolting and at low altitude”
Claim · model-written summary
Shoot apical meristem cell density decreased after bolting and at high altitude.
- Organ / stage
- shoot apical meristem (SAM)e0
- Treatment
- after bolting and at high altitudee0
- Outcome
- cell densitye0
- Direction
- decreasede0
- Comparator
- before bolting and at low altitudee0
Not reportedTaxon
Verbatim
e0“cell size increased and cell density decreased in the shoot apical meristem (SAM) after bolting and at high altitude, compared to those cells before bolting and at low altitude”
Claim · model-written summary
SPS, SUS and FBA1 were significantly up-regulated after bolting at different altitudes.
- Gene
- sucrose phosphate synthase ( SPS ), sucrose synthase ( SUS ) , fructose‐1,6‐bisphosphate aldolase ( FBA1 )e0
- Outcome
- up‐regulatede0
- Direction
- up‐regulatede0
- Qualifier
- during the after‐bolting period at different altitudee0
Not reportedTaxon
Verbatim
e0“sucrose phosphate synthase ( SPS ), sucrose synthase ( SUS ) , fructose‐1,6‐bisphosphate aldolase ( FBA1 ), and alpha‐galactosidase ( AGAL2 ) genes were significantly up‐regulated during the after‐bolting period at different altitude”
Claim · model-written summary
AGAL2 was significantly up-regulated after bolting at different altitudes.
Not reportedTaxon
Verbatim
e0“alpha‐galactosidase ( AGAL2 ) genes were significantly up‐regulated during the after‐bolting period at different altitude”
The same questions in other papers
altitude · growth · Brassica napus (oilseed rape)Positive and negative results
1 in the opposite direction
- 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.