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Yang Yang,Xinyu Chen,Liping Ran,Yunfei Wu,Xurun Yu,Zhaodi Dong,Fei Xiong 한국식물학회 2019 Journal of Plant Biology Vol.62 No.4
The development of protein bodies (PBs) determinesthe processing properties of wheat (Triticum aestivum L.). Ithas been known that nitrogen uptake has a strong impact ongrain protein concentration. However, the differences of theformation of PB in different developmental stages anddifferent positions in wheat endosperm are still controversial. To solve these issues, PBs formation in different wheatendosperm parts and the response to nitrogen were investigatedusing light, transmission electron microscopes in presentstudy. The main results were as follows. (1) Proteins mainlyformed PBs via the Golgi apparatus in the vacuole at theearly stage of wheat endosperm development. After 7 dayspost anthesis, most proteins were derived from the roughendoplasmic reticulum. (2) The morphology of PBs was diverseamong different endosperm parts. Compared with the centralendosperm, the PBs in sub-aleurone cells were abundant andlarge. (3) More abundant endoplasmic reticulum, Golgi andmitochondrion were observed at the early stage after nitrogentreatment. Nitrogen also increased the accumulation of PBsat the later stage. (4) The sub-aleurone region cells of theendosperm presented more significant responses to nitrogenthan the central endosperm.
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