Resistance response of five afforestation tree species under drought stress

doi:10.12302/j.issn.1000-2006.202002019

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2021, Vol. 45 ›› Issue (2): 111-119.doi: 10.12302/j.issn.1000-2006.202002019

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Resistance response of five afforestation tree species under drought stress

HONG Zhen¹(), LIU Shuxin², HONG Conghao³, LEI Xiaohua⁴

1. Scientific Research and Management Center of East China Pharmaceutical Botanical Garden, Lishui 323000, China
2. Lishui Vocational & Technical College, Lishui 323000, China
3. College of Biological Sciences and Biotechnology, Beijing 100083, China
4. Center of Lishui City Liandu District Urban Forestry Working Station, Lishui 323000, China

Received:2020-02-19 Accepted:2020-06-20 Online:2021-03-30 Published:2021-04-09

Abstract

Abstract:

【Objective】To select species for afforestation in difficult sites by evaluating the drought resistance of five native and alien tree species. 【Methods】Pot experiments were conducted to study the physiological response and drought resistance of 1-year-old seedlings of Liquidambar formosana, Pistacia chinensis, Ulmus elongata, Koelreuteria bipinnata, and Quercus texana under conditions of appropriate humidity and light, moderate, and severe drought (75%-80%, 55%-60%, 40%-45% and 30%-35% of the soil field capacity).【Result】With the increase of drought extent, five species showed different levels of symptoms of drought stress and major symptoms are yellow leaves and wilting. Severely affected branches’ tops dried up with the increasing time of continuing drought. After sereve drought stress for 30 days, partial seedings of U. elongata and K. bipinnata died, whole leaves of P. chinensis turned yellow or red, and leaves in the middle and lower portions of L. formosana and Q. texana turned yellow and dry. The chlorophyll and relative water content in the leaves of the five tree species decreased; the relative conductance and malondialdehyde (MDA) concentration in leaves increased; the content of free proline, soluble sugar and protein in leaves increased. The SOD, POD, and CAT activities in the leaves of Q. texana increased, whereas it increased and then decreased in L. formosana, P. chinensis, and K. bipinnata trees. With the increasing drought extent, the SOD and CAT activities in the leaves of U. elongate increased at first and then decreased, while the activity of POD increased with the increasing drought stress. Membership function analysis showed that under moderate and severe drought stress, drought resistance levels were Q. texana > L. formosana > P. chinensis > U. elongate > K. bipinnata.【Conclusion】Q. texana has the strongest drought resistance among the five tree species, which provides a competitive advantage for afforestation usage in difficult sites.

Key words: afforestation tree species, drought stress, physiological responses, evaluation of drought resistance, subordinate function method

CLC Number:

S718.4

HONG Zhen, LIU Shuxin, HONG Conghao, LEI Xiaohua. Resistance response of five afforestation tree species under drought stress[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2021, 45(2): 111-119.

Figures/Tables 5

Table 1

Effects of drought stress on morphological characteristics of five tree species"

树种 species	处理 treatments	形态特征 morphological characteristics
树种 species	处理 treatments	10 d	20 d	30 d
枫香 L. formosana	T1	正常	3株老叶出现黄斑	6株老叶出现焦边
	T2	正常	4株叶片萎蔫下垂, 顶部叶片脉间褶皱	9株叶片萎蔫下垂, 上部叶片脉间褶皱
	T3	正常	6株叶片萎蔫下垂, 顶部叶片脉间褶皱	9株老叶失绿黄化,叶缘出现坏死斑, 上部叶片脉间褶皱
黄连木 P. chinensis	T1	正常	1株老叶变黄	3株下部叶片变黄,2株叶片全部变黄
	T2	正常	2株老叶变黄	6株中下部叶片变黄变红, 4株全部叶片变黄变红
	T3	2株下部老叶出现萎蔫, 下部叶片开始变黄	2株中下部叶片全部变黄	全部株中下部叶片变黄,6株全部叶片变黄变红,1株顶端干枯
长序榆 U. elongata	T1	1株老叶出现黄化叶斑	2株老叶叶缘干枯	2株叶片全部黄化, 其余株全部叶片有黄化叶斑
	T2	1株大部分老叶出现黄化叶斑	5株叶片全部出现黄化叶斑,叶片不完整	2株死亡,其余株叶片黄化斑增多
	T3	2株下部老叶变黄,1株下部老叶干枯,1株下部老叶出现黄化叶斑	5株老叶全部脱落, 顶部叶片萎蔫	3株死亡,其余株叶片黄斑焦灼
黄山栾树 K. bipinnata	T1	3株中上部成熟叶片出现黄色叶斑,其中1株全部叶片萎蔫	6株叶片失绿出现黄色叶斑	全部植株脉间失绿出现黄斑
	T2	3株成熟叶片全部出现黄色叶斑,并且新叶焦边	7株叶片脉间失绿严重, 叶斑数量增多	2株死亡,其余株叶片脉间失绿黄斑增多
	T3	2株叶片全部变黄, 1株成熟叶片焦灼	8株叶片脉间失绿黄色叶斑多, 4株叶片全部变黄,下部叶片干枯	4株死亡,其余株叶片萎蔫, 中下部叶片变黄
娜塔栎 Q. texana	T1	1株下部老叶萎蔫	1株下部老叶叶缘失绿	2株老叶叶缘焦边
	T2	1株下部老叶萎蔫叶缘失绿	3株下部老叶枯黄	3株下部老叶干枯面积加大
	T3	1株下部老叶萎蔫失绿, 1株下部老叶边缘焦边	4株中下部叶片变黄, 下部老叶干枯,2株下部叶片焦边	6株中下部叶片变红, 下部老叶干枯

Table 1

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Table 4

Table 5

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树种 species	处理 treatments	叶片相对含水量/% LRWC	相对电导率/% REC	叶绿素总含量/ (mg·g^-1) total chlorophyll content
枫香 L. formosana	CK	71.45±0.93 a	28.90±0.60 c	4.45±0.14 a
	T1	70.87±0.74 a	30.94±1.80 c	3.97±0.27 b
	T2	69.37±1.17 ab	34.76±0.72 b	3.62±0.15 c
	T3	67.40±1.77 b	39.83±1.03 a	3.20±0.24 d
黄连木 P. chinensis	CK	66.53±1.85 a	25.77±0.67 d	5.80±0.11 a
	T1	61.40±2.62 ab	32.29±0.52 c	5.32±0.18 b
	T2	60.53±3.20 b	34.36±0.59 b	4.34±0.11 c
	T3	58.84±3.76 c	36.06±0.55 a	3.12±0.40 d
长序榆 U. elongata	CK	68.87±0.91 a	43.13±2.26 c	5.72±0.19 a
	T1	67.16±1.04 a	47.85±2.33 b	5.36±0.09 b
	T2	63.92±0.59 c	61.21±1.09 a	5.03±0.12 c
	T3	63.03±0.74 c	62.01±0.71 a	3.20±0.23 d
黄山栾树 K. bipinnata	CK	68.04±0.67 a	23.55±1.12 d	5.86±0.12 a
	T1	66.83±0.82 a	27.64±1.32 c	4.07±0.08 b
	T2	61.57±1.91 b	30.16±0.45 a	3.87±0.12 b
	T3	59.23±2.50 b	32.99±1.59 b	3.45±0.19 c
娜塔栎 Q. texana	CK	59.86±0.91 a	35.10±0.80 c	5.34±0.18 a
	T1	56.74±1.51 b	38.39±0.75 b	4.91±0.26 b
	T2	55.23±2.63 b	38.50±0.57 b	4.90±0.04 b
	T3	54.26±1.09 b	50.54±2.17 a	3.99±0.20 c

树种 species	处理 treatments	游离脯氨酸 freeproline	可溶性糖 soluble sugar	可溶性蛋白 soluble protein
枫香 L. formosana	CK	0.05±0.00 c	40.38±0.14 c	17.05±1.93 c
	T1	0.08±0.00 c	43.75±0.50 c	20.64±1.08 b
	T2	0.12±0.03 b	55.70±1.46 b	29.17±0.96 a
	T3	0.18±0.01 a	79.62±3.74 a	29.75±2.17 a
黄连木 P. chinensis	CK	0.95±0.02 b	49.86±2.89 c	24.05±3.07 d
	T1	0.96±0.00 ab	57.43±0.56 b	30.10±0.92 c
	T2	0.97±0.00 ab	58.45±0.34 b	37.04±0.88 b
	T3	0.98±0.01 a	63.52±0.77 a	42.09±2.92 a
长序榆 U. elongata	CK	0.68±0.01 c	26.44±0.81 c	42.27±1.04 b
	T1	0.95±0.19 b	28.77±4.14 c	47.61±6.89 ab
	T2	0.96±0.00 b	65.72±2.49 b	51.12±5.12 ab
	T3	1.04±0.19 a	84.82±4.59 a	53.38±4.13 a
黄山栾树 K. bipinnata	CK	0.16±0.00 c	21.93±1.11 a	39.64±5.41 c
	T1	0.21±0.01 b	25.35±1.58 c	47.64±2.14 b
	T2	0.26±0.03 a	34.79±2.29 b	51.77±0.88 ab
	T3	0.25±0.01 a	53.83±0.24 a	55.51±4.07 a
娜塔栎 Q. texana	CK	0.09±0.02 d	50.00±4.53 b	41.49±1.33 c
	T1	0.15±0.03 c	50.15±1.32 b	45.76±0.60 b
	T2	0.22±0.01 b	57.08±4.33 b	46.54±1.51 b
	T3	0.27±0.01 a	67.76±9.30 a	51.35±2.05 a

树种 species	处理 treatments	丙二醛含量/ (mmol·g^-1) MDA content	超氧化物歧化酶活性/ (U·g^-1) SOD activity	过氧化物酶活性/ (μg·g^-1·min^-1) POD activity	过氧化氢酶活性/ (U·g^-1) CAT activity
枫香 L. formosana	CK	4.65±0.96 c	446.88±11.76 a	3.27 ±0.19 c	129.91±6.98 d
	T1	7.84±0.87 b	475.90±10.81 a	5.81±1.16 a	140.35±4.38 c
	T2	10.57±0.85 a	301.96±37.82 b	5.26 ±0.53 ab	164.78±2.21 a
	T3	10.62±0.50 a	270.80±36.28 b	4.26 ±0.60 bc	152.47±0.71b
黄连木 P. chinensis	CK	3.59±0.23 b	709.80±24.49 c	3.67± 0.17 b	60.83±0.29 c
	T1	4.42±0.36 b	854.73±42.24 b	4.32±0.86 b	137.58±2.64 b
	T2	5.78±1.23 ab	1352.13±43.57 a	5.87±1.07 a	179.32±2.84 a
	T3	6.79±1.89 a	1287.30±24.51 a	5.68±0.39 a	168.61±22.19 a
长序榆 U. elongata	CK	15.31±1.34 c	388.62±23.55 b	17.49±2.38 b	40.45±2.00 c
	T1	16.74±2.07 c	411.23±33.76 b	20.43±6.68 ab	49.26±2.38 b
	T2	33.11±2.70 b	560.64±47.62 a	27.80±3.50 a	59.65±4.00 a
	T3	43.62±2.13 a	510.08±46.63 a	28.16±1.12 a	57.39±3.71 a
黄山栾树 K. bipinnata	CK	5.32±0.58 b	1 007.64±58.02 c	17.26±1.19 c	250.30±23.70 b
	T1	7.95±2.80 b	1 079.29±41.35 bc	23.12±3.24 b	284.21±14.36 a
	T2	19.09±4.25 a	1 264.01±119.46 a	34.56±2.42 a	287.16±18.56 a
	T3	25.33±5.56 a	1 173.25±24.50 ab	26.23±1.48 b	239.93±5.01b
娜塔栎 Q. texana	CK	9.60±1.29 b	608.33±89.93 c	15.10±4.34 b	26.54±2.45 c
	T1	12.55±3.50 ab	781.17±45.60 b	20.96±2.07b	41.03±1.50 b
	T2	12.99±3.48 ab	784.31±58.03 b	32.14±6.66 a	45.13±3.07 b
	T3	19.03±6.41 a	827.62±78.35 a	34.16±1.96 a	53.80±1.12 a

处理 treatments	树种 species	叶片相对含水量+ leaf relative water content +	相对电导率- relative conductivity -	叶绿素+ chloro- phyll +	脯氨酸+ free pro- line+	可溶性糖+ soluble sugar +	可溶性蛋白质+ soluble protein+	过氧化物酶活性+ POD activity+	超氧化物歧化酶活性+ SOD activity+	过氧化氢酶活性+ CAT activity+	丙二醛- MDA-	综合隶属函数值 subordinate function values	抗旱性 drought resistance
T1	枫香 L. formosana	0.45	0.51	0.59	0.49	0.40	0.48	0.50	0.56	0.67	0.56	0.52	2
	黄连木 P. chinesis	0.46	0.44	0.38	0.33	0.62	0.59	0.60	0.60	0.59	0.55	0.52	2
	长序榆 U. elongata	0.58	0.45	0.58	0.39	0.40	0.63	0.35	0.35	0.40	0.46	0.46	5
	黄山栾树 K. bipinnata	0.49	0.37	0.35	0.42	0.64	0.47	0.42	0.52	0.53	0.62	0.48	4
	娜塔栎 Q. texana	0.51	0.50	0.64	0.54	0.38	0.49	0.59	0.58	0.59	0.65	0.55	1
T2	枫香 L. formosana	0.41	0.55	0.56	0.51	0.66	0.37	0.66	0.61	0.60	0.54	0.55	2
	黄连木 P. chinesis	0.43	0.55	0.58	0.61	0.36	0.52	0.62	0.57	0.65	0.38	0.53	3
	长序榆 U. elongata	0.44	0.64	0.59	0.60	0.49	0.39	0.45	0.42	0.46	0.47	0.49	4
	黄山栾树 K. bipinnata	0.51	0.34	0.43	0.55	0.34	0.46	0.58	0.49	0.44	0.50	0.46	5
	娜塔栎 Q. texana	0.43	0.50	0.58	0.51	0.64	0.47	0.53	0.63	0.65	0.65	0.56	1
T3	枫香 L. formosana	0.38	0.44	0.48	0.53	0.61	0.53	0.59	0.64	0.67	0.54	0.54	1
	黄连木 P. chinesis	0.42	0.52	0.63	0.45	0.49	0.56	0.56	0.58	0.50	0.56	0.53	3
	长序榆 U. elongata	0.49	0.36	0.34	0.65	0.53	0.59	0.51	0.48	0.34	0.49	0.48	4
	黄山栾树 K. bipinnata	0.51	0.58	0.47	0.54	0.51	0.41	0.40	0.42	0.38	0.52	0.47	5
	娜塔栎 Q. texana	0.43	0.48	0.65	0.59	0.52	0.48	0.55	0.56	0.56	0.63	0.54	1

Resistance response of five afforestation tree species under drought stress

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