Photosynthesis, chlorophyll fluorescence, and antioxidant enzyme responses of invasive weed Mikania micrantha to Bemisia tabaci infestation

Title:

Photosynthesis, chlorophyll fluorescence, and antioxidant enzyme responses of invasive weed Mikania micrantha to Bemisia tabaci infestation

Creator:

Zhang, L. L. and Wen, D. Z.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:27c5e15f-d609-4c4e-94d9-effae4865e3d
uuid:27c5e15f-d609-4c4e-94d9-effae4865e3d
issn:0300-3604
doi:10.1007/s11099-008-0078-9

Subject:

carotenoids, catalase, chlorophyll fluorescence, electron transport rate, glutathione, photochemical quenching, photosystem 2 efficiency, proline, and superoxide dismutase

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

In a glasshouse, Bemisia tabaci infestation largely reduced response of photosynthesis to irradiance and CO2 concentration of Mikania micrantha compared with the non-infested control (C) ones. The maximum irradiance-saturated photosynthetic rate (Pmax) and saturation irradiance (SI) of the infested M. micrantha were only 21.3 % and 6.5 % of the C-plants, respectively. B. tabaci infestation led to the reduction of contents of chlorophyll and carotenoids in M. micrantha, which was accompanied with the decrease of actual photosystem 2 (PS2) efficiency (ΦPS2), efficiency of excitation energy capture by open PS2 reaction centres (Fv'/Fm'), electron transport rate (ETR), and photochemical quenching (qP). Moreover, superoxide dismutase and catalase activities significantly decreased while proline and glutathione contents significantly increased in infested M. micrantha. Hence B. tabaci infestation not only induced direct damage of photosynthetic apparatus but also altered the antioxidant enzymes activities in M. micrantha, which might as consequences accelerate senescence of this weed. and L. L. Zhang, D. Z. Wen.

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

457-462

Source:

Photosynthetica | 2008 Volume:46 | Number:3

Harvested from:

CDK

Metadata only:

false