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Antioxidant Enzyme Responses in Potato ( Solanum tuberosum ) Cultivars Colonized with Arbuscular Mycorrhizas
Potato Research ( IF 2.9 ) Pub Date : 2020-03-24 , DOI: 10.1007/s11540-019-09440-1
Zohrab Adavi , Mahmoud Reza Tadayon , Jamshid Razmjoo , Hamideh Ghaffari

Arbuscular mycorrhizas (AMs), formed between AM fungi and vascular plants, are a widespread mutualistic symbiosis where fungi colonize root cells, transfer mineral nutrients (mainly phosphate) and, in turn, obtain carbon of a photosynthetic origin. To explore the possible roles played by antioxidant enzymes in the roots and shoots of AM-inoculated potato cultivars, a field experiment was conducted using three potato cultivars (Agria, Santé and Arinda) and two Glomus intraradices levels (0 and 30 g). The leaf and root activities of catalase (CAT), peroxidase (POX) and ascorbate peroxidase (APX) affecting mycorrhizal colonization and potato yield were measured. Under AM inoculation, the three CAT, POX and APX enzymes were induced in both the roots and leaves of all the cultivars. However, the highest increases in POX, APX and CAT activities under AM inoculation were noted in the leaves of Santé and the roots of Arinda. Mycorrhizal colonization was more pronounced under arbuscular mycorrhiza inoculation compared with the control. Yield also increased by 36%, 26% and 20% in Ardina, Santé and Agria, respectively, when they were inoculated with arbuscular mycorrhizas. The results suggest that inoculation of potato cultivars with AM induces antioxidant enzymes and, thereby, higher yields. In addition, induction of enzymes is found to be cultivar-plant-part specific.



中文翻译:

丛枝菌根定植的马铃薯品种的抗氧化酶响应。

AM真菌和维管植物之间形成的丛枝菌根(AM)是一种广泛的共生共生体,其中真菌定居于根细胞,转移矿物质营养素(主要是磷酸盐),进而获得光合作用的碳。为了探索抗氧化酶在AM接种马铃薯品种的根和茎中可能发挥的作用,使用三个马铃薯品种(Agria,Santé和Arinda)和两个Glomus内radi进行了田间试验水平(0和30克)。测定过氧化氢酶(CAT),过氧化物酶(POX)和抗坏血酸过氧化物酶(APX)的叶和根活性对菌根定殖和马铃薯产量的影响。在AM接种下,在所有品种的根和叶中都诱导了三种CAT,POX和APX酶。但是,AM接种后POX,APX和CAT活性的最高增加出现在Santé的叶子和Arinda的根中。与对照相比,丛枝菌根接种后菌根定植更为明显。接种丛枝菌根后,Ardina,Santé和Agria的收率也分别提高了36%,26%和20%。结果表明,用AM接种马铃薯品种会诱导抗氧化酶,从而提高产量。此外,

更新日期:2020-03-24
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