Nuran ÇİÇEK, İvanka FEDINA, Hüsnü ÇAKIRLAR, Maya VELITCHKOVA, Katya GEORGIEVA

9798

The role of short-term high temperature pretreatment on the UV-B tolerance of barley cultivars

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 (A535 and A300), and stress markers (malondialdehyde, H2O2, 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.
Anahtar Kelimeler:

Key words: Chlorophyll fluorescence, high temperature, Hordeum vulgare, pigment, photosynthesis, UV-B

The role of short-term high temperature pretreatment on the UV-B tolerance of barley cultivars

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 (A535 and A300), and stress markers (malondialdehyde, H2O2, 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.
Keywords:

Key words: Chlorophyll fluorescence, high temperature, Hordeum vulgare, pigment, photosynthesis, UV-B,

PDF
Turkish Journal of Agriculture and Forestry-Cover
  • ISSN: 1300-011X
  • Yayın Aralığı: 6
  • Yayıncı: TÜBİTAK
Arşiv
Sayıdaki Diğer Makaleler

Agrobacterium-mediated transformation of grapefruit with the wild-type and mutant RNA-dependent RNA polymerase genes of Citrus tristeza virus

Bayram ÇEVİK, Richard F. LEE, Charles L. NIBLETT

The effect of cadmium on growth and antioxidant responses in the safflower (Carthamus tinctorius L.) callus

Shahram NAMJOOYAN, Ramezanali KHAVARI-NEJAD, Franceous BERNARD, Shahrokh NAMDJOYAN, Hamed PIRI

The effect of various long-term tillage systems on soil properties and spring barley yield

İrena MALECKA, Andrzej BLECHARCZYK, Zuzanna SAWINSKA, Tomasz DOBRZENIECKI

The role of short-term high temperature pretreatment on the UV-B tolerance of barley cultivars

Nuran ÇİÇEK, İvanka FEDINA, Hüsnü ÇAKIRLAR, Maya VELITCHKOVA, Katya GEORGIEVA

Plant and insect diversity along an experimental gradient of larch-birch mixtures in Chinese boreal forests

Jing LI, Juan SHI, Youqing LUO, Kari HELIÖVAARA

Enhancement of emergence potential and stand establishment of Moringa oleifera Lam. by seed priming

Wasif NOUMAN, Muhammad Tahir SIDDIQUI, Shahzad Maqsood Ahmed BASRA, İrfan AFZAL

Laminated veneer lumber (LVL) manufacturing using three hybrid poplar clones

Ramazan KURT, Hayrettin MERİÇ, Kağan ASLAN, Muhammet ÇİL

Large scale evaluation of single storm and short/long term erosivity index models

Alidad KARAMI, Mehdi HOMAEE, Mohammad Reza NEYSHABOURI, Sadegh AFZALINIA

Morphological diversity among fig (Ficus carica L.) accessions sampled from the Eastern Mediterranean Region of Turkey

Oğuzhan ÇALIŞKAN, Atila Aytekin POLAT

Rootstock potential of Turkish Lagenaria siceraria germplasm for watermelon: plant growth, yield and quality

Fatih KARACA, Halit YETİŞİR, İlknur SOLMAZ, Elif ÇANDIR, Şener KURT, Nebahat SARI