Naslov
Akumulacija škroba u maloj vodenoj leći uslijed izlaganja povišenom salinitetu i 6- benzilaminopurinu
(Starch accumulation in common duckweed induced by increased salinity and 6-benzylaminopurine)

Autori
Lazić, Dora ; Živković, Katja ; Horvat, Danijela ; Viljevac Vuletić, Marija ; Cesar, Vera ; Peršić, Vesna ; Antunović Dunić, Jasenka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Zbornik sažetaka (14. Hrvatskog biološkog kongresa s međunarodnim sudjelovanjem) / Caput Mihalić, Katarina ; Mičetić Stanković, Vlatka ; Urlić, Inga ; Mešić, Armin ; Kružić, Petar - Zagreb : Hrvatsko biološko društvo, 2022, 273-274

Skup
14. HRVATSKI BIOLOŠKI KONGRES

Mjesto i datum
Pula, Hrvatska, 12.10.2022. - 16.10.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Lemna minor L., natrijev klorid, citokinin, polifenolne kiseline, škrobna zrnca, svjetlosna mikroskopija, biogorivo
(Lemna minor L., sodium chloride, cytokinin, polyphenolic acid, starch grains, light microscopy, biofuel)

Sažetak
Common duckweed (Lemna minor L.), a small floating macrophyte with a high phytoremediation and bioaccumulation capacity, is characterized by high dry matter yield, cellulose, and starch content. Appropriate manipulation of growing conditions can provide a substantial increase in starch accumulation. Hence, this study aimed to investigate the impact of individual and simultaneous exposure to phytohormone 6- benzylaminopurine (1 μM 6-BA) and increased salinity (50, 100, 150 mM NaCl) on starch and phenolics accumulation, as well as on the antioxidant capacity of common duckweed. After ten days of exposure, increased salinity inhibited duckweed's growth rate and frond size, while 6-BA stimulated it. Simultaneously, the progressive accumulation of starch due to increased salinity was measured and localized on semi-thin microscopic sections in the mesophyll layer. The content of polyphenolic acids (chlorogenic, ferulic, p-coumaric, and syringyl acid), determined by HPLC, differed depending on salinity level. Higher salinity caused a significant decrease in the total phenolic content, indicating salt's negative effect. However, high phenolic content and potent antioxidant activity were observed in the combination of salt and phytohormone. These results suggest an effective tolerance mechanism to increased salinity, making duckweeds an excellent potential feedstock for bioethanol production in moderately saline ecosystems.

Izvorni jezik
Hrvatski, engleski

Znanstvena područja
Biologija

POVEZANOST RADA