Abstract
Droughts cause severe crop losses worldwide and climate change is projected to increase their prevalence in the future. Similar to the situation for many crops, the reference plant Arabidopsis thaliana (Ath) is considered drought-sensitive, whereas, as we demonstrate, its close relatives Arabidopsis lyrata (Aly) and Eutrema salsugineum (Esa) are drought-resistant. To understand the molecular basis for this plasticity we conducted a deep phenotypic, biochemical and transcriptomic comparison using developmentally matched plants. We demonstrate that Aly responds most sensitively to decreasing water availability with early growth reduction, metabolic adaptations and signaling network rewiring. By contrast, Esa is in a constantly prepared mode as evidenced by high basal proline levels, ABA signaling transcripts and late growth responses. The stress-sensitive Ath responds later than Aly and earlier than Esa, although its responses tend to be more extreme. All species detect water scarcity with similar sensitivity; response differences are encoded in downstream signaling and response networks. Moreover, several signaling genes expressed at higher basal levels in both Aly and Esa have been shown to increase water-use efficiency and drought resistance when overexpressed in Ath. Our data demonstrate contrasting strategies of closely related Brassicaceae to achieve drought resistance.
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 8
Claim · model-written summary
Arabidopsis lyrata was drought resistant.
- Taxon
- Arabidopsis lyrata
Arabidopsis lyratae0 - Outcome
- drought-resistante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis lyrata (Aly) and Eutrema salsugineum (Esa) are drought-resistant”
Claim · model-written summary
Eutrema salsugineum was drought resistant.
- Taxon
- Eutrema salsugineumEutrema salsugineume0
- Outcome
- drought-resistante0
Verbatim
e0“Arabidopsis lyrata (Aly) and Eutrema salsugineum (Esa) are drought-resistant”
Claim · model-written summary
Arabidopsis lyrata responded early to declining water with growth reduction, metabolic adaptation and signaling rewiring.
- Taxon
- Arabidopsis lyrataArabidopsis lyratat0
- Outcome
- early growth reduction, metabolic adaptations and signaling network rewiringe0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aly responds most sensitively to decreasing water availability with early growth reduction, metabolic adaptations and signaling network rewiring”
t0“Arabidopsis lyrata”
Claim · model-written summary
Eutrema salsugineum showed high basal proline and ABA signaling transcripts and late growth responses.
- Taxon
- Eutrema salsugineumEutrema salsugineumt0
- Outcome
- high basal proline levels, ABA signaling transcripts and late growth responsese0
Verbatim
e0“Esa is in a constantly prepared mode as evidenced by high basal proline levels, ABA signaling transcripts and late growth responses”
t0“Eutrema salsugineum”
Claim · model-written summary
Arabidopsis thaliana responded later than A. lyrata and earlier than E. salsugineum, with more extreme responses.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Outcome
- responses tend to be more extremee0
- Qualifier
- later than Aly and earlier than Esae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stress-sensitive Ath responds later than Aly and earlier than Esa, although its responses tend to be more extreme”
t0“Arabidopsis thaliana”
Claim · model-written summary
All three species detected water scarcity with similar sensitivity.
- Taxon
- BrassicaceaeBrassicaceaet0
- Outcome
- detect water scarcity with similar sensitivitye0
Verbatim
e0“All species detect water scarcity with similar sensitivity”
t0“Brassicaceae”
Claim · model-written summary
Response differences were encoded in downstream signaling and response networks.
- Taxon
- BrassicaceaeBrassicaceaet0
- Outcome
- response differencese0
- Qualifier
- downstream signaling and response networkse0
Verbatim
e0“response differences are encoded in downstream signaling and response networks”
t0“Brassicaceae”
Claim · model-written summary
Several signaling genes had higher basal expression in both resistant species.
- Taxon
- BrassicaceaeBrassicaceaet0
- Outcome
- signaling genes expressed at higher basal levelse0
- Direction
- highere0
Verbatim
e0“several signaling genes expressed at higher basal levels in both Aly and Esa”
t0“Brassicaceae”