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- 저자 : Antony Maodzeka (검색결과 1 건)
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Antony Maodzeka,Qian Wang,Xiaoyang Chen,Nazim Hussain,Dezhi Wu,Lixi Jiang 한국식물학회 2019 Journal of Plant Biology Vol.62 No.3
Application of 5-Aminolevulinic acid (ALA) toplants not only affects their growth, but also influences thenutritional values of plant organs. Oilseed rape (Brassicanapus L.) is an important source of vegetable oil and variouscompounds benefiting human health. However, limitedinformation is available regarding the effect of ALA on thegrowth of this important crop. Here, we investigated theconsequence of ALA application on oilseed rape seedlings. We found that moderate ALA concentrations (0.5 or 1 mg/L)caused an increase in the dry weight of the seedling biomassand the contents of various bioactive compounds, i.e. solublesugar, phenolic compounds, ascorbate, and glucosinolatesetc, and the upregulated expressional levels of the genesencoding RuBisCO, namely, BnRBCL and BnRBCS, andother genes such as BnUGT79B1, BnMYB12 and MYB28that regulate the synthesis of phenolic compounds andglucosinolates respectively. On the other hand, high ALAconcentrations (5 and 10 mg/L) gave rise to oxidative stressthat negatively affected oilseed rape growth, and causeddeleterious effects by reducing various bioactive compounds,but increasing tocopherols that may serve as a stress mitigatoryagent. With the high ALA concentrations, the ultrastructureof chloroplasts was notably damaged, featured with largestarch grains and fewer plastoglobules.
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