Pregled bibliografske jedinice broj: 1223994
Increased temperature effects on tomato seed germination, seedling growth and physiology
Increased temperature effects on tomato seed germination, seedling growth and physiology // 14. Hrvatski biološki kongres Zbornik sažetaka
Pula, Hrvatska, 2022. str. 287-288 (poster, domaća recenzija, sažetak, znanstveni)
CROSBI ID: 1223994 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Increased temperature effects on tomato seed germination, seedling growth and physiology
Autori
Tokić, Mirta ; Leljak Levanić, Dunja ; Bauer, Nataša
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
14. Hrvatski biološki kongres Zbornik sažetaka
/ - , 2022, 287-288
Skup
14. Hrvatski biološki kongres
Mjesto i datum
Pula, Hrvatska, 12.10.2022. - 16.10.2022
Vrsta sudjelovanja
Poster
Vrsta recenzije
Domaća recenzija
Ključne riječi
heat stress, tomato, germination, HSP90, proline
Sažetak
With ongoing climate change, rising temperatures are becoming a severe threat to crop yield and food security worldwide. Owing to their sessile lifestyle, plants had evolved many ways to circumvent their apparent handicap. Complex molecular machineries deal with sensing, transmittance and response to environmental stimuli. To evaluate the impact of heat stress (HS), the globally cultivated tomato (Solanum lycopersicum) was chosen as a model plant. Tomato germination potential was investigated at a temperature range from 24 to 36 °C. Seedling treatments consisted of prolonged exposure to 37 °C and a short-term exposure to 45 °C. Root growth and seedling morphology were determined. For HS evaluation, proline and malondialdehyde (MDA) content were measured, HSP90 immunoassayed and HS-related gene expression analyzed by quantitative PCR. The maximal permissive germination temperature for tomato seeds was 34 °C. Both HS regimes caused increased levels of HSP90 and HS-related gene expression in seedlings. Prolonged exposure to 37 °C did not, in contrast to the 45 °C-treatment, significantly affect proline and MDA levels, but inhibited root and shoot growth. The heat wave-like treatment at 45 °C completely blocked primary root growth and strongly inhibited seedling development. Inclusive, both types of exposures negatively affected growth, biochemical and molecular pathways, indicating high sensitivity of tomato seedlings to applied HS treatments.
Izvorni jezik
Engleski
Znanstvena područja
Biologija
POVEZANOST RADA
Projekti:
EK-EFRR-KK.05.1.1.02.0005 - Agrobioraznolikost - osnova za prilagodbu i ublažavanje posljedica klimatskih promjena u poljoprivredi (Goreta Ban, Smiljana; Bauer, Nataša; Kereša, Snježana; Salopek-Sondi, Branka; Jasprica, Nenad, EK ) ( CroRIS)
HRZZ-IP-2016-06-6229 - MATH-BTB proteini kao regulatori transkripcije i RNA posredovane metilacije DNA u biljnom razvitku (PHYTOMETHDEV) (Leljak-Levanić, Dunja, HRZZ - 2016-06) ( CroRIS)
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
