Study on compositions of parenchyma in twigs of woody saplings in Dabie Mountains, Anhui, China

doi:10.17521/cjpe.2018.0316

Abstract

Abstract:

Aims Axial parenchyma (AP) and ray parenchyma (RP) in secondary xylem have many important ecological functions, such as storage and translocation. Quantifying the compositions of parenchyma in secondary xylem will benefit the further research about their functions. However, the understanding of parenchyma compositions in current-year branches is still lacking.

Methods Eighteen woody saplings in the Tianma National Nature Reserve were selected for sampling. The proportions of cross-sectional area occupied by AP and RP were measured. The variations in parenchyma among species and their phylogenetic signals were analyzed. Compared with the related dataset, the differences between twigs and trunks were tested.

Important findings (1) The proportions of total parenchyma in twigs of the 18 woody saplings were 9.96%-18.56%, with the average of 14.80%; the proportions of RP (7.74%-15.45%) were higher than that of AP (1.13%-7.49%). (2) The total parenchyma (RAP) in twigs was lower than that in trunks, of which, RP in twigs was lower than that in trunks while AP showed an opposite pattern. The differences between twigs and trunks may be caused by the differences between different organs and different life history periods. (3) Significant phylogenetic signal was detected in the amount of AP in secondary xylem of twigs. This study primitively verified the phylogenetic signal of the secondary xylem parenchyma, and suggested that the difference between organs, and the difference between life history periods, had important effects on the variations of parenchyma.

http://jtp.cnki.net/bilingual/detail/html/ZWSB201903006

Key words: parenchyma, phylogenetic signal, xylem, organ

ZHANG Xi-Jin, SONG Kun, PU Fa-Guang, GAO Zhi-Wen, NI Tian-Pin, CHU Xing-Hang, WANG Ze-Ying, SHANG Kan-Kan, DA Liang-Jun. Study on compositions of parenchyma in twigs of woody saplings in Dabie Mountains, Anhui, China[J]. Chin J Plant Ecol, 2019, 43(3): 238-244.

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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2018.0316

https://www.plant-ecology.com/EN/Y2019/V43/I3/238

Figures/Tables 5

References 27

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物种 Species	海拔 Altitude (m)										总计 Total number
	马鬃岭 Mazongling					天堂寨 Tiantangzhai					总计 Total number
	592	837	920	960	1 130	740	922	1 000	1 017	1 200
白檀 Symplocos paniculata				1	1				1		3
豹皮樟 Litsea coreana var. sinensis	1					1	1				3
大果山胡椒 Lindera praecox	3			3	3			1		3	13
灯台树 Bothrocaryum controversum	1				2		1				4
芬芳安息香 Styrax odoratissimus	2	2									4
海金子 Pittosporum illicioides		1				3	1		1		6
黄丹木姜子 Litsea elongata		3	1	1	2				3		10
尖萼梣 Fraxinus odontocalyx					2		2				4
雷公鹅耳枥 Carpinus viminea					2					1	3
橉木 Padus buergeriana									3		3
千金榆 Carpinus cordata							3				3
青冈 Cyclobalanopsis glauca	3										3
青皮木 Schoepfia jasminodora							3				3
山胡椒 Lindera glauca	2		2	1	1	1	2	1		1	11
四照花 Cornus kousa subsp. chinensis					1			1		3	5
小叶白辛树 Pterostyrax corymbosus	1		1		1			1		3	7
细叶青冈 Cyclobalanopsis gracilis				2	2	3	1		3	3	14
紫茎 Stewartia sinensis										3	3

物种 Species	海拔 Altitude (m)										总计 Total number
	马鬃岭 Mazongling					天堂寨 Tiantangzhai					总计 Total number
	592	837	920	960	1 130	740	922	1 000	1 017	1 200
白檀 Symplocos paniculata				1	1				1		3
豹皮樟 Litsea coreana var. sinensis	1					1	1				3
大果山胡椒 Lindera praecox	3			3	3			1		3	13
灯台树 Bothrocaryum controversum	1				2		1				4
芬芳安息香 Styrax odoratissimus	2	2									4
海金子 Pittosporum illicioides		1				3	1		1		6
黄丹木姜子 Litsea elongata		3	1	1	2				3		10
尖萼梣 Fraxinus odontocalyx					2		2				4
雷公鹅耳枥 Carpinus viminea					2					1	3
橉木 Padus buergeriana									3		3
千金榆 Carpinus cordata							3				3
青冈 Cyclobalanopsis glauca	3										3
青皮木 Schoepfia jasminodora							3				3
山胡椒 Lindera glauca	2		2	1	1	1	2	1		1	11
四照花 Cornus kousa subsp. chinensis					1			1		3	5
小叶白辛树 Pterostyrax corymbosus	1		1		1			1		3	7
细叶青冈 Cyclobalanopsis gracilis				2	2	3	1		3	3	14
紫茎 Stewartia sinensis										3	3

物种 Species	射线薄壁组织 RP (%)	轴向薄壁组织 AP (%)	总薄壁组织 RAP (%)
白檀 Symplocos paniculata	15.45 ± 3.37	3.11 ± 1.62	18.56 ± 4.96
豹皮樟 Litsea coreana var. sinensis	11.92 ± 2.63	4.18 ± 4.46	16.10 ± 7.09
大果山胡椒 Lindera praecox	12.65 ± 3.32	3.76 ± 1.36	16.41 ± 3.90
灯台树 Bothrocaryum controversum	9.59 ± 1.82	1.84 ± 0.53	11.43 ± 2.18
芬芳安息香 Styrax odoratissimus	12.71 ± 2.88	1.29 ± 0.83	14.00 ± 3.61
海金子 Pittosporum illicioides	9.32 ± 2.92	3.93 ± 0.65	13.25 ± 2.63
黄丹木姜子 Litsea elongata	13.88 ± 3.78	3.51 ± 1.59	17.39 ± 4.72
尖萼梣 Fraxinus odontocalyx	9.57 ± 2.28	3.07 ± 1.28	12.64 ± 2.63
雷公鹅耳枥 Carpinus viminea	10.62 ± 0.88	4.45 ± 2.57	15.07 ± 3.45
橉木 Padus buergeriana	8.72 ± 0.92	1.24 ± 0.58	9.96 ± 0.72
千金榆 Carpinus cordata	13.05 ± 1.68	4.45 ± 1.12	17.49 ± 1.68
青冈 Cyclobalanopsis glauca	8.91 ± 5.09	6.13 ± 0.81	15.03 ± 5.86
青皮木 Schoepfia jasminodora	7.74 ± 4.06	7.49 ± 1.19	15.22 ± 5.24
山胡椒 Lindera glauca	12.02 ± 1.76	4.02 ± 1.97	16.04 ± 2.33
四照花 Cornus kousa subsp. chinensis	12.55 ± 1.79	2.14 ± 0.71	14.69 ± 1.96
小叶白辛树 Pterostyrax corymbosus	9.97 ± 3.64	1.13 ± 0.64	11.10 ± 4.19
细叶青冈 Cyclobalanopsis gracilis	9.71 ± 2.38	6.36 ± 2.65	16.07 ± 3.62
紫茎 Stewartia sinensis	12.21 ± 1.17	3.77 ± 1.53	15.98 ± 2.00
最大值 Max	15.45	7.49	18.56
最小值 Min	7.74	1.13	9.96
平均值 Average	11.14	3.66	14.80
变异系数 Coefficient of variation	18.63	48.65	15.84

物种 Species	射线薄壁组织 RP (%)	轴向薄壁组织 AP (%)	总薄壁组织 RAP (%)
白檀 Symplocos paniculata	15.45 ± 3.37	3.11 ± 1.62	18.56 ± 4.96
豹皮樟 Litsea coreana var. sinensis	11.92 ± 2.63	4.18 ± 4.46	16.10 ± 7.09
大果山胡椒 Lindera praecox	12.65 ± 3.32	3.76 ± 1.36	16.41 ± 3.90
灯台树 Bothrocaryum controversum	9.59 ± 1.82	1.84 ± 0.53	11.43 ± 2.18
芬芳安息香 Styrax odoratissimus	12.71 ± 2.88	1.29 ± 0.83	14.00 ± 3.61
海金子 Pittosporum illicioides	9.32 ± 2.92	3.93 ± 0.65	13.25 ± 2.63
黄丹木姜子 Litsea elongata	13.88 ± 3.78	3.51 ± 1.59	17.39 ± 4.72
尖萼梣 Fraxinus odontocalyx	9.57 ± 2.28	3.07 ± 1.28	12.64 ± 2.63
雷公鹅耳枥 Carpinus viminea	10.62 ± 0.88	4.45 ± 2.57	15.07 ± 3.45
橉木 Padus buergeriana	8.72 ± 0.92	1.24 ± 0.58	9.96 ± 0.72
千金榆 Carpinus cordata	13.05 ± 1.68	4.45 ± 1.12	17.49 ± 1.68
青冈 Cyclobalanopsis glauca	8.91 ± 5.09	6.13 ± 0.81	15.03 ± 5.86
青皮木 Schoepfia jasminodora	7.74 ± 4.06	7.49 ± 1.19	15.22 ± 5.24
山胡椒 Lindera glauca	12.02 ± 1.76	4.02 ± 1.97	16.04 ± 2.33
四照花 Cornus kousa subsp. chinensis	12.55 ± 1.79	2.14 ± 0.71	14.69 ± 1.96
小叶白辛树 Pterostyrax corymbosus	9.97 ± 3.64	1.13 ± 0.64	11.10 ± 4.19
细叶青冈 Cyclobalanopsis gracilis	9.71 ± 2.38	6.36 ± 2.65	16.07 ± 3.62
紫茎 Stewartia sinensis	12.21 ± 1.17	3.77 ± 1.53	15.98 ± 2.00
最大值 Max	15.45	7.49	18.56
最小值 Min	7.74	1.13	9.96
平均值 Average	11.14	3.66	14.80
变异系数 Coefficient of variation	18.63	48.65	15.84

薄壁组织 Parenchyma	K	p
射线薄壁组织 RP	0.62	0.151
轴向薄壁组织 AP	1.03	0.004
总薄壁组织 RAP	0.65	0.152