Rice Science ›› 2023, Vol. 30 ›› Issue (2): 127-137.DOI: 10.1016/j.rsci.2023.01.005
收稿日期:
2022-05-20
接受日期:
2022-08-10
出版日期:
2023-03-28
发布日期:
2022-12-30
. [J]. Rice Science, 2023, 30(2): 127-137.
Fig. 1. Expression patterns of OsPDR20 in wild type rice under Zn deficient or overloaded stress by qRT-PCR. A and B, Changes of OsPDR20 transcripts in root (A) and shoot (B) tissues were monitored during the course of Zn deprivation. C, Transcripts of OsPDR20 were determined at 0.4 (control), 500, 1 000 and 5 000 μmol/L Zn concentrations for 6 h. Two-week-old rice was exposed to normal Zn supply (+Zn) and Zn deficiency (-Zn) for 14 d. Data are Mean ± SD (n = 3). The asterisks indicate the significant difference between the control and treatment (P < 0.05).
Fig. 2. Assessment of subcellular localization of OsPDR20 by expression in rice mesophyll protoplasts and tobacco epidermal cells. A and B, Fluorescence of pAN580-GFP as control vector (A) and OsPDR20-pAN580-GFP fusion protein (B) that were transiently transformed into rice mesophyll protoplasts. BF, Bright field; GFP, Green fluorescent protein. C, Fluorescence of OsPDR20-pAN580-GFP in tobacco epidermal cells. PIP2A-RFP was used as a biomarker for plasma membrane location.
Fig. 3. Growth phenotypes of wild type (WT) rice and its RNAi lines (i-1, i-2 and i-6) under Zn-normal supply (+Zn) and Zn-deficiency (-Zn) conditions. A-D, Phenotypes of WT and RNAi lines under +Zn and -Zn conditions. Scale bars are 10 cm. E and F, Shoot lengths (E) and root lengths (F) of WT and RNAi lines. G and H, Dry weights (DW) of shoot (G) and root (H) tissues in WT and RNAi lines. Two-week-old rice was hydroponically grown for 28 d. Data are Mean ± SD (n = 3). The asterisks indicate the significant difference between WT and RNAi lines (P < 0.05).
Fig. 4. Zn concentrations in root and shoot tissues of wild type (WT) and RNAi lines (i-1, i-2 and i-6) with Zn translocation from roots to shoots under Zn-normal supply (+Zn) and Zn-deficiency (-Zn) conditions. A and B, Zn concentrations in roots (A) and shoots (B). C, Translocation of Zn from roots to shoots. Two-week-old rice plants were hydroponically grown for 28 d. Data are Mean ± SD (n = 3). The asterisks indicate the significant difference between WT and RNAi lines (P < 0.05).
Fig. 5. Morphological differences between wild type (WT) and RNAi lines (i-1, i-2 and i-6) at the maturity stage. A, Phenotypes of WT and RNAi plants. Scale bar is 10 cm. B, Plant heights of WT and RNAi lines. C, Main stem structures of WT and RNAi lines. The distance between the arrows represents the length of internode. Scale bar is 10 cm. D, Internode lengths of WT and RNAi lines. E, Tiller number per plant of WT and RNAi lines. F, Effective panicle number per plant of WT and RNAi lines. The rice plants were grown to maturity under natural conditions. Data in B, D, E and F are Mean ± SD (n = 3). The asterisks indicate the significant difference between WT and RNAi lines (P < 0.05).
Fig. 6. Agronomic traits relevant to seed development of wild type (WT) and RNAi lines (i-1, i-2 and i-6). A and B, Phenotypes of panicle length. Scale bar is 3 cm. C and D, Phenotypes of grain width. Scale bar is 1 cm. E and F, Phenotypes of grain length. Scale bar is 1 cm. G, Seed weight per plant. H, Grain yield per square meter. Data are Mean ± SD (n = 3). The asterisks indicate the significant difference between WT and RNAi lines (P < 0.05).
Fig. 7. Zn concentrations in different tissues or organs of wild type (WT) and RNAi lines (i-1, i-2 and i-6) at the maturity stage. A, Assessment of Zn concentrations in rice straw (upper and lower leaves and stem). B, Calculation of Zn translocation from leaves to grains (husk and brown rice). Rice was grown to the seed maturity stage under natural conditions for two consecutive years. Data are Mean ± SD (n = 3). The asterisks indicate the significant difference between WT and RNAi lines (P < 0.05).
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