Physiological and gene-expression variation in watermelon (citrullus lanatus l.) cultivars exposed to drought stress
Yükleniyor...
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Polish Botanical Society.
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Drought conditions may have direct or indirect effects on plant physiology,
biochemistry, and molecular characteristics. The purpose of this study was to
investigate the effects of drought stress on the physiological, biochemical, and
molecular responses of three different watermelon cultivars with varying levels
of drought tolerance (24: drought resistant, CS: moderately tolerant, and 98:
drought sensitive). The cultivars exhibited different responses to cope with
water stress according to their tolerance level. Drought induced significant
reductions in chlorophyll a, total chlorophyll and carotenoid content and
glutation reductase and ascorbate peroxidase activity in the sensitive cultivar
unlike in the moderately tolerant and drought resistant cultivars. Additionally, the
expression levels of NAC1, NAC2, ORE1, WRKY24, SAG12, SAG13, KCS2, CER1,
DREB2A, LTP3, SWEET15, and PYL9 genes were measured using qRT-PCR.
The expression ratios of the genes significantly varied depending on the gene
location and on the tolerance of the cultivars. Results showed that the physiology
and biochemical and molecular pathways of tolerant cultivars change to adapt to
drought conditions. Therefore, the drought-resistant cultivar copes with drought
stress by increasing proline content and antioxidant enzyme activities, as well as
by increasing the expression of specific genes.
Açıklama
Anahtar Kelimeler
abiyotik stres, biyoaktif bileşikler, Citrullus lanatus
Kaynak
Acta Societatis Botanicorum Poloniae
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
89
Sayı
2
Künye
Erez, E., İnal, B., Karipçin, M. Z. & Altıntaş, S. (2020). Physiological and gene-expression variation in watermelon (citrullus lanatus l.) cultivars exposed to drought stress. Acta Societatis Botanicorum Poloniae, 89(2),8921.
