1 材料与方法
1.1 材料
1.2 叶绿素及其前体物质含量的测定
1.3 叶绿素酶活性的测定
1.4 叶绿体超微形态观察
1.5 统计分析
2 结果与分析
2.1 波罗蜜的叶色观察
2.2 叶绿素及其前体物质含量的测定
表1 叶绿素前体物质含量Tab. 1 Chlorophyll precursor substance content |
| 叶绿素及其前体物质 Chlorophyll and its precursors | 正常绿叶 Normal green leaves | 白化叶 White leaves | 返绿叶 Green leaves |
|---|---|---|---|
| ALA/(nmol•g‒1) | 11.92±0.93a | 12.15±0.67a | 12.05±0.79a |
| PBG/(nmol•g‒1) | 6.27±0.54a | 5.85±0.34a | 6.65±0.43a |
| Uro Ⅲ/(nmol•g‒1) | 1.62±0.12a | 1.36±0.18a | 1.43±0.17a |
| Coprogen Ⅲ/(nmol•g‒1) | 0.87±0.16a | 0.90±0.18a | 0.83±0.09a |
| Proto Ⅸ/(μg•g‒1) | 1.24±0.26a | 1.39±0.26a | 1.47±0.37a |
| Mg-Proto Ⅸ/(μg•g‒1) | 0.85±0.16a | 0.91±0.18a | 0.98±0.25a |
| Pchlide/(μg•g‒1) | 0.51±0.06a | 0.52±0.08a | 0.49±0.14a |
注:ALA:δ-氨基乙酰丙酸;PBG:胆色素原;Uro Ⅲ:尿卟啉原Ⅲ;Coprogen Ⅲ:粪卟啉原Ⅲ;Proto Ⅸ:原卟啉Ⅸ;Mg-Proto Ⅸ:镁原卟啉Ⅸ;Pchlide:原脱植基叶绿素。同行相同小写字母表示二者之间无显著差异。 | |
Note: ALA: δ-aminol(a)evulinic acid; PBG: Porphobilinogen; Uro Ⅲ: Urinary porphyrinogen III; Coprogen Ⅲ: Protoporphyrinogen III; Proto Ⅸ: Protoporphyrin Ⅸ; Mg-Proto Ⅸ: Magnesium protoporphyrin IX; Pchlide: Protochlorophyllide.The same lowercase letter in the same row in the table indicates no significant difference between the two. |
图4 3种叶色叶绿素前体物质的相对含量设正常绿叶各物质含量为100%,白化叶、返绿叶的各物质含量换算成相应各物质含量的百分数。相同小写字母表示二者之间无显著差异。 Fig. 4 Relative content of chlorophyll precursors in three leaf colors The content of each substance in normal green leaves was set as 100 %, and the content of each substance in albinism leaves and returning green leaves was converted into the percentage of the corresponding content of each substance. The same lowercase letter in the same line in the graph indicates no significant difference between the two. |
表2 叶绿素含量Tab. 2 Chlorophyll content |
| 叶绿素 chlorophyll/(mg•g‒1) | 正常绿叶 Normal green leaves | 白化叶 white leaves | 返绿叶 Green leaves |
|---|---|---|---|
| 叶绿素a | 0.956±0.105a | 0.003±0.001c | 0.159±0.028b |
| 叶绿素b | 0.519±0.090a | 0.003±0.002b | 0.072±0.016b |
| 类胡萝卜素 | 0.161±0.013a | 0.001±0.001b | 0.005±0.003b |
| 叶绿素总含量 | 1.475±0.185a | 0.006±0.003c | 0.231±0.012b |
| 叶绿素a/b | 1.860±0.216a | 1.511±1.304a | 2.316±0.864a |
| 类胡萝卜素/叶绿素总含量 | 0.110±0.015a | 0.169±0.145a | 0.021±0.010a |
注:同行不同小写字母表示二者之间达显著差异(P<0.05)。 | |
Note: Different lowercase in the same row in the table indicate significant difference between the two (P<0.05). |
2.3 叶绿素酶活性的测定
2.4 叶绿体超微形态观察
图8 叶绿体的超微结构A,B:正常绿叶叶绿体超微结构;C:白化叶叶绿体超微结构;D,E,F:返绿叶叶绿体超微结构;Nu:细胞核;Mi:线粒体;CL:叶绿体;CW:细胞壁;CM: 叶绿体膜;P:嗜饿颗粒;GL:基粒片层;SL:基质片层。 Fig. 8 Ultrastructure of chloroplasts A, B: Ultrastructure of normal chloroplasts; C: Ultrastructure of chloroplast in albino leaf; D, E, F: Ultrastructure of chloroplast in regreening leaf; Nu: Nucleus; Mi: Mitochondria; CL: Chloroplast; CW: Cell wall; CM: Chloroplast membrane; P: Hungry particles; GL: Grana lamellae; SL: stroma lamella. |
