Abstract
The impact of pretreatment with high temperature (45 °C for 45 min) on the UV-B tolerance of 4 barley cultivars (Hordeum vulgare L. 'Bülbül-89', 'Kalaycı-97', 'Tarm-92', and 'Tokak-157/37') was examined. The response of the plants to treatment was evaluated by measuring the pigment content, chlorophyll a fluorescence, oxygen evolution, fraction of oxygen-evolving complex, proline content, UV-B-absorbing compounds (A_{535} and A_{300}), and stress markers (malondialdehyde, H_2O_2, and UV-B marker). Regardless of high temperature pretreatment, UV-B irradiation decreased the photosynthetic pigment content, photosystem II activity, oxygen evolution, and the fraction of oxygen-evolving complex in almost all of the barley cultivars. UV-B treatment significantly increased the proline content, UV-B-absorbing compounds, and stress markers. According to the findings, it can be deduced that short-term high temperature pretreatment might not provide a cross-tolerance to UV-B irradiation in the 4 barley cultivars studied; in fact, such exposure was found to aggravate the responses. In addition, although plants substantially accumulated the UV-B-absorbing compounds, the photosynthetic process might not be adequately protected from UV-B radiation.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 4
Claim · model-written summary
Short-term high temperature pretreatment aggravated the responses of barley cultivars to UV-B irradiation and may not provide cross-tolerance.
- Taxon
- barley cultivars
.jpg?width=60)
Hordeum vulgaree4 - Treatment
- short-term high temperature pretreatmente4
- Outcome
- responsese4
- Direction
- aggravatee4
- Qualifier
- might not provide a cross-tolerance to UV-B irradiatione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e4“short-term high temperature pretreatment might not provide a cross-tolerance to UV-B irradiation in the 4 barley cultivars studied; in fact, such exposure was found to aggravate the responses”
Claim · model-written summary
UV-B irradiation decreased photosynthetic pigment content, photosystem II activity and oxygen evolution in almost all barley cultivars.
- Taxon
- barley cultivarsHordeum vulgaree2
- Treatment
- UV-B irradiatione2
- Outcome
- photosynthetic pigment content, photosystem II activity, oxygen evolutione2
- Direction
- decreasede2
- Qualifier
- Regardless of high temperature pretreatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Regardless of high temperature pretreatment, UV-B irradiation decreased the photosynthetic pigment content, photosystem II activity, oxygen evolution, and the fraction of oxygen-evolving complex in almost all of the barley cultivars”
Claim · model-written summary
UV-B irradiation decreased the fraction of oxygen-evolving complex in almost all barley cultivars.
- Taxon
- barley cultivarsHordeum vulgaree2
- Treatment
- UV-B irradiatione2
- Outcome
- fraction of oxygen-evolving complexe2
- Direction
- decreasede2
- Qualifier
- Regardless of high temperature pretreatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Regardless of high temperature pretreatment, UV-B irradiation decreased the photosynthetic pigment content, photosystem II activity, oxygen evolution, and the fraction of oxygen-evolving complex in almost all of the barley cultivars”
Claim · model-written summary
UV-B treatment significantly increased proline content, UV-B-absorbing compounds and stress markers in barley cultivars.
- Taxon
- barley cultivarsHordeum vulgaree2
- Treatment
- UV-B treatmente3
- Outcome
- proline content, UV-B-absorbing compounds, and stress markerse3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Regardless of high temperature pretreatment, UV-B irradiation decreased the photosynthetic pigment content, photosystem II activity, oxygen evolution, and the fraction of oxygen-evolving complex in almost all of the barley cultivars”
e3“UV-B treatment significantly increased the proline content, UV-B-absorbing compounds, and stress markers”
The same questions in other papers
uv · physiology: osmolytes · Hordeum vulgare (barley)Results differ
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
uv · physiology: photosynthesis · Hordeum vulgare (barley)Positive and negative results
9 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- positive
9 papers more in this group
See all 13 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.