Abstract
Drought stress is one of the factors limiting pepper production in water-stressed regions. It affects growth and development by inducing morphological, biochemical, and physiological changes. Breeding drought-resistant varieties is a sustainable strategy to mitigate drought, therefore, reliable evaluation systems are essential to identify drought-resistant pepper accessions. In this study, 100 pepper accessions were screened for drought resistance under highly controlled conditions at the vegetative stage. Selected accessions exhibited a significantly higher recovery rate after water-deficiency and showed durable resistance under greenhouse conditions. Correlation analysis between drought resistance with morphological and physiological traits showed that the recovery rate was positively correlated with root length and relative water content, and negatively correlated with plant height and leaf area. Gene expression analysis showed that the drought-resistant accession exhibited higher expression levels of drought-responsive genes under drought stress. Among the accessions, anthocyanin-accumulating peppers showed more significant drought resistance compared to other accessions. When the MYB transcription factor An2 , the genetic determinant of anthocyanin accumulation, was silenced, drought resistance was significantly reduced. Drought-resistant accessions with favorable adaptive traits identified in this study will be valuable in various breeding programs to generate new pepper cultivars to cope with climate change.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 8
Claim · model-written summary
Selected pepper (Capsicum) accessions had a significantly higher recovery rate after water deficiency.
CapsicumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum”
e1“Selected accessions exhibited a significantly higher recovery rate after water-deficiency”
Claim · model-written summary
Selected pepper accessions showed durable resistance under greenhouse conditions.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum”
e2“showed durable resistance under greenhouse conditions”
Claim · model-written summary
Recovery rate was positively correlated with root length and relative water content.
- Outcome
- recovery ratee3
- Direction
- positively correlatede3
- Comparator
- root length and relative water contente3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum”
e3“the recovery rate was positively correlated with root length and relative water content”
Claim · model-written summary
Recovery rate was negatively correlated with plant height and leaf area.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum”
e4“the recovery rate was positively correlated with root length and relative water content, and negatively correlated with plant height and leaf area”
Claim · model-written summary
The drought-resistant pepper accession showed higher expression of drought-responsive genes under drought stress.
- Material
- drought-resistant accessione5
- Treatment
- drought stresse5
- Gene
- drought-responsive genese5
- Outcome
- expression levels of drought-responsive genese5
- Direction
- highere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum”
e5“the drought-resistant accession exhibited higher expression levels of drought-responsive genes under drought stress”
Claim · model-written summary
Anthocyanin-accumulating pepper accessions showed more significant drought resistance than other accessions.
- Material
- anthocyanin-accumulating pepperse6
- Outcome
- drought resistancee6
- Direction
- more significante6
- Comparator
- other accessionse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum”
e6“anthocyanin-accumulating peppers showed more significant drought resistance compared to other accessions”
Claim · model-written summary
Silencing the MYB transcription factor An2 significantly reduced drought resistance in pepper.
- Treatment
- was silencede7
- Gene
- MYB transcription factor An2e7
- Outcome
- drought resistancee7
- Direction
- reducede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum”
e7“When the MYB transcription factor An2 , the genetic determinant of anthocyanin accumulation, was silenced, drought resistance was significantly reduced”
Claim · model-written summary
Drought-resistant accessions identified in this study will be valuable in breeding programs.
- Outcome
- breeding programse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum”
e1“Drought-resistant accessions with favorable adaptive traits identified in this study will be valuable in various breeding programs”
The same questions in other papers
drought · molecular: expression · Capsicum (peppers)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
loss of function · tolerance: abiotic · Capsicum (peppers)Results agree
1 paper in the same direction as this paper
- negative
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.