PMID- 25223031
OWN - NLM
STAT- MEDLINE
DCOM- 20151016
LR  - 20181202
IS  - 1001-9332 (Print)
IS  - 1001-9332 (Linking)
VI  - 25
IP  - 6
DP  - 2014 Jun
TI  - [Effects of silicon on photosynthetic characteristics and activity of antioxidant 
      enzymes in continuous-cropped cucumber seedlings].
PG  - 1733-8
AB  - The effects of spraying exogenous silicon (Si) (0, 1, 2, 3, 4 and 5 mmol L(-1)) 
      on the growth, photosynthetic characteristics and activity of antioxidant enzymes 
      in continuous-cropped 'Jinyan No. 4' cucumber seedlings were studied. The results 
      showed that with the application of 1-3 mmol x L(-1) Si, electrolyte leakage (EL) 
      and malondialdehyde (MDA) content in leaves were significantly decreased, while 
      the contents of chlorophyll a (Chl a), chlorophyll b (Chl b), carotenoids (Car), 
      chlorophyll (a+b) and photosynthetic rate (Pn) in leaves were significantly 
      improved, the activities of superoxidase (SOD), peroxidase (POD), catalase (CAT) 
      and ascorbic acid peroxidase (APX) were significantly increased, and the plant 
      height, stem diameter and dry mass accumulation of cucumber seedlings were 
      promoted. Compared with the low Si concentrations, excessive Si (4-5 mmol x 
      L(-1)) resulted in higher EL and MDA, which were still lower than that in 
      control, decreased the antioxidant enzymes activity and photosynthesis, and 
      inhibited the growth of cucumber seedlings. These findings indicated that 
      exogenous Si could enhance the capacity of scavenging active oxygen species and 
      improve photosynthesis, protect cucumber seedlings from the lipid peroxidation, 
      and increase the resistance to continuous-cropped cucumber obstacle. The optimal 
      silicon concentration was 2 mmol x L(-1).
FAU - Zhang, Ping-Yan
AU  - Zhang PY
FAU - Gao, Rong-Guang
AU  - Gao RG
FAU - Yang, Feng-Juan
AU  - Yang FJ
FAU - Wang, Xiu-Feng
AU  - Wang XF
FAU - Wei, Min
AU  - Wei M
FAU - Shi, Qing-Hua
AU  - Shi QH
FAU - Li, Yan
AU  - Li Y
LA  - chi
PT  - Journal Article
PL  - China
TA  - Ying Yong Sheng Tai Xue Bao
JT  - Ying yong sheng tai xue bao = The journal of applied ecology
JID - 9425159
RN  - 0 (Antioxidants)
RN  - 0 (Reactive Oxygen Species)
RN  - 1406-65-1 (Chlorophyll)
RN  - 36-88-4 (Carotenoids)
RN  - 4Y8F71G49Q (Malondialdehyde)
RN  - 5712ZB110R (chlorophyll b)
RN  - EC 1.11.1.- (Peroxidases)
RN  - EC 1.11.1.6 (Catalase)
RN  - YF5Q9EJC8Y (Chlorophyll A)
RN  - Z4152N8IUI (Silicon)
SB  - IM
MH  - Antioxidants
MH  - Carotenoids
MH  - Catalase
MH  - Chlorophyll
MH  - Chlorophyll A
MH  - Cucumis sativus/enzymology/*physiology
MH  - Lipid Peroxidation
MH  - Malondialdehyde
MH  - Oxidation-Reduction
MH  - Peroxidases
MH  - *Photosynthesis
MH  - Plant Leaves
MH  - Reactive Oxygen Species
MH  - Seedlings/*enzymology/physiology
MH  - Silicon/*physiology
EDAT- 2014/09/17 06:00
MHDA- 2015/10/17 06:00
CRDT- 2014/09/17 06:00
PHST- 2014/09/17 06:00 [entrez]
PHST- 2014/09/17 06:00 [pubmed]
PHST- 2015/10/17 06:00 [medline]
PST - ppublish
SO  - Ying Yong Sheng Tai Xue Bao. 2014 Jun;25(6):1733-8.