{"product_id":"changes-in-c4-photosynthesis-in-response-to-sulfur-dioxide-exposure-von-shajrul-amin-und-akbar-masood","title":"Changes in C4 Photosynthesis in Response to Sulfur Dioxide Exposure","description":"\u003cp\u003eZea mays (a C4 plant) can withstand high sulfur   dioxide concentrations up to 12.0 ppm without any   harmful effects. Visible injury symptoms appear   only  after exposure to sulfur dioxide   concentrations beyond 12.0 ppm. The   pigments,proteins,amino acids and starch decrease   after exposure to higher concentrations of sulfur   dioxide. The free sugars,however,increase in   response to sulfur dioxide exposure. The activity of   PEP - carboxylase is inhibited  non -competitively    with respect to substrates, PEP and Mg2+ but it  is    competitive   with  HCO3-.The high affinity of the   enzyme for  HCO3- renders the replacement by sulfur   dioxide more difficult which results in  decreased     sensitivity  towards sulfur  dioxide. NADP -   malate dehydrogenase is inhibited uncompetitively   with  respect to  OAA  and non ¿ competitively   with   respect to  NADPH. The low inhibitory effect   of sulfur dioxide on the enzymes is indicated by   high Ki values.In case of NADP - malic   enzyme,sulfur  dioxide  shows a  non ¿ competitive    inhibition with respect to  NADP+ but  a   competitive  one  with respect  to Mg2+. With    respect  to malate, the  inhibition is partially    competitive.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783838348407\"\u003e\u003ch3\u003eBiochemical and metabolic changes\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783838348407","offer_id":39485421879389,"sku":"9783838348407","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/b0a70030-f5dd-435a-81d9-6ccc69aa1386.jpg?v=1773297214","url":"https:\/\/shop.autorenwelt.de\/products\/changes-in-c4-photosynthesis-in-response-to-sulfur-dioxide-exposure-von-shajrul-amin-und-akbar-masood","provider":"Autorenwelt Shop","version":"1.0","type":"link"}