Effects of AMF and PGPR on growth and nutrient absorption of Matthiola incana under low temperature and weak light stress

doi:10.3969/j.issn.1004-1524.20240734

Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (8): 1694-1705.DOI: 10.3969/j.issn.1004-1524.20240734

• Horticultural Science • Previous Articles Next Articles

Effects of AMF and PGPR on growth and nutrient absorption of Matthiola incana under low temperature and weak light stress

SHI Yangyang¹(), LYU Lixia²^,^*(), TUO Dengfeng³

1. Shanxi Vocational University of Engineering Science and Technology, Jinzhong 030619, Shanxi, China
2. Zhangjiakou Academy of Agricultural Sciences, Zhangjiakou 075000, Hebei, China
3. Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing 100091, China

Received:2024-08-13 Online:2025-08-25 Published:2025-09-03
Contact: LYU Lixia

Abstract

Abstract:

Using Matthiola incana as the test material, this study investigated the effects of inoculation with arbuscular mycorrhizal fungi (AMF), plant root growth promoting bacteria (PGPR), and compound inoculation (AMF+PGPR) under normal temperature and light (temperature 20 ℃, photon flux density 1 000 μmol·m^-2·s^-1) and low temperature and weak light (temperature 5 ℃, photon flux density 100 μmol·m^-2·s^-1) on the growth, nutrient absorption, and hormone metabolism of M. incana, with no inoculation (CK) as the control, in order to provide theoretical basis for the application of AMF and PGPR synergistic technology to promote plant growth under low temperature and weak light stress. The results showed that low temperature and weak light stress inhibited the increase in height, leaf area, and fresh weight of M. incana plants, decreased the content of photosynthetic pigments, and reduced the content of nitrogen, phosphorus, and potassium. However, inoculation with AMF and/or PGPR had a certain promoting effect on M. incana growth. Under low temperature and weak light stress, the mycorrhizal infection rate of AMF+PGPR treatment increased by 7.3 percentage points compared with AMF treatment, but there was no significant difference in arbuscular attachment rate, number of invasion points, and number of vesicles between AMF+PGPR and AMF treatments; Compared with PGPR treatment, the number of PGPR in the rhizosphere soil treated with AMF+PGPR increased by 52.0%, and the number of PGPR in the roots increased by 50.0%. Under low temperature and weak light conditions, compared with CK treatment, the content of chlorophyll a, chlorophyll b, total chlorophyll, and carotenoids increased by 62.7%, 45.0%, 59.8%, and 52.4%, respectively, under AMF+PGPR treatment; The aboveground N content, root N content, aboveground P content, root P content, aboveground K content, and root K content increased by 63.3%, 206.0%, 89.4%, 138.6%, 108.0%, and 191.3%, respectively. Under low temperature and weak light conditions, the content of IAA in hormone metabolism increased, while the content of ABA decreases. Under AMF+PGPR treatment, the activities of SOD and POD increased by 42.6% and 26.8%, respectively, while the content of MDA and H₂O₂ decreased by 24.3% and 30.9%, respectively. In summary, AMF and PGPR have a synergistic effect. AMF promotes the colonization of PGPR in roots and soil, PGPR increases the arbuscular mycorrhizal infection rate of AMF, and the effect of AMF+PGPR treatment on improving M. incana’s resistance to low temperature and weak light is better than that of single AMF or PGPR treatment.

Key words: arbuscular mycorrhizal fungus, plant growth-promoting rhizobacteria, Matthiola incana, low temperature, weak light, nutrient

CLC Number:

S681.2

SHI Yangyang, LYU Lixia, TUO Dengfeng. Effects of AMF and PGPR on growth and nutrient absorption of Matthiola incana under low temperature and weak light stress[J]. Acta Agriculturae Zhejiangensis, 2025, 37(8): 1694-1705.

Figures/Tables 8

References 45

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胁迫处理 Stress treatment	接种处理 Inoculation treatment	菌根侵染率 Mycorrhizal colonization/%	丛枝着生率 Arbuscule rate/%	侵入点位数 Numbers of infection point/cm^-1	泡囊数 Vesicles/cm^-1
NN	CK	0	0	0	0
	AMF	49.3±0.6 bc	26.5±0.9 ab	7.3±1.2 ab	12.3±0.3 ab
	PGPR	0	0	0	0
	AMF+PGPR	61.5±0.9 a	29.2±1.6 a	9.0±0.6 a	14.7±0.3 a
LW	CK	0	0	0	0
	AMF	45.2±0.2 c	24.2±1.2 b	6.3±0.7 b	11.0±0.6 b
	PGPR	0	0	0	0
	AMF+PGPR	52.5±0.8 b	27.5±0.8 ab	7.6±0.3 ab	12.7±0.3 ab

胁迫处理 Stress treatment	接种处理 Inoculation treatment	菌根侵染率 Mycorrhizal colonization/%	丛枝着生率 Arbuscule rate/%	侵入点位数 Numbers of infection point/cm^-1	泡囊数 Vesicles/cm^-1
NN	CK	0	0	0	0
	AMF	49.3±0.6 bc	26.5±0.9 ab	7.3±1.2 ab	12.3±0.3 ab
	PGPR	0	0	0	0
	AMF+PGPR	61.5±0.9 a	29.2±1.6 a	9.0±0.6 a	14.7±0.3 a
LW	CK	0	0	0	0
	AMF	45.2±0.2 c	24.2±1.2 b	6.3±0.7 b	11.0±0.6 b
	PGPR	0	0	0	0
	AMF+PGPR	52.5±0.8 b	27.5±0.8 ab	7.6±0.3 ab	12.7±0.3 ab

胁迫处理 Stress treatment	接种处理 Inoculation treatment	株高 Plant height/cm	叶面积 Leaf area/cm²	地上部干重 Dry weight of shoots/g	根系干重 Dry weight of roots/g
NN	CK	15.2±0.4 d	671.0±20.1 de	2.15±0.08 cd	0.12±0.01 ef
	AMF	16.9±0.3 ab	855.3±28.9 c	2.29±0.17 bc	0.18±0.02 cd
	PGPR	17.1±0.2 ab	1 036.4±22.6 b	2.62±0.17 ab	0.22±0.01 c
	AMF+PGPR	17.4±0.1 a	1 305.8±47.4 a	2.74±0.12 a	0.48±0.01 a
LW	CK	11.2±0.3 e	589.1±7.4 e	1.87±0.08 d	0.09±0.01 f
	AMF	15.3±0.3 d	679.7±13.9 d	2.18±0.16 cd	0.15±0.01 de
	PGPR	16.1±0.2 cd	828.2±20.9 c	2.24±0.15 bcd	0.19±0.02 cd
	AMF+PGPR	16.5±0.2 bc	886.7±38.4 c	2.32±0.16 bc	0.28±0.02 b

胁迫处理 Stress treatment	接种处理 Inoculation treatment	株高 Plant height/cm	叶面积 Leaf area/cm²	地上部干重 Dry weight of shoots/g	根系干重 Dry weight of roots/g
NN	CK	15.2±0.4 d	671.0±20.1 de	2.15±0.08 cd	0.12±0.01 ef
	AMF	16.9±0.3 ab	855.3±28.9 c	2.29±0.17 bc	0.18±0.02 cd
	PGPR	17.1±0.2 ab	1 036.4±22.6 b	2.62±0.17 ab	0.22±0.01 c
	AMF+PGPR	17.4±0.1 a	1 305.8±47.4 a	2.74±0.12 a	0.48±0.01 a
LW	CK	11.2±0.3 e	589.1±7.4 e	1.87±0.08 d	0.09±0.01 f
	AMF	15.3±0.3 d	679.7±13.9 d	2.18±0.16 cd	0.15±0.01 de
	PGPR	16.1±0.2 cd	828.2±20.9 c	2.24±0.15 bcd	0.19±0.02 cd
	AMF+PGPR	16.5±0.2 bc	886.7±38.4 c	2.32±0.16 bc	0.28±0.02 b

胁迫处理 Stress treatment	接种处理 Inoculation treatment	氮含量 N content		磷含量 P content		钾含量 K content
胁迫处理 Stress treatment	接种处理 Inoculation treatment	地上部Shoot	根Root	地上部Shoot	根Root	地上部Shoot	根Root
NN	CK	28.1±2.2 de	11.6±1.0 f	55.2±1.2 e	27.7±1.1 f	11.5±0.3 e	3.0±0.2 f
	AMF	30.8±1.0 cde	27.0±0.9 cd	76.9±0.7 b	38.1±0.2 d	13.1±0.6 d	4.2±0.1 d
	PGPR	41.9±2.0 ab	30.9±1.3 b	94.9±1.8 a	40.6±0.6 c	21.6±0.5 a	5.2±0.1 c
	AMF+PGPR	45.9±4.1 a	35.5±0.9 a	97.6±2.1 a	55.3±1.1 a	21.4±0.7 a	8.4±0.2 a
LW	CK	26.3±3.0 e	11.4±0.5 f	41.5±1.4 f	20.7±0.5 g	8.7±0.5 f	2.3±0.1 g
	AMF	28.9±0.5 de	22.6±1.3 e	61.6±1.2 d	33.8±0.9 e	16.3±0.5 c	3.4±0.1 e
	PGPR	35.7±1.1 bcd	24.6±0.6 de	71.6±1.7 c	36.5±0.5 d	16.5±0.3 c	4.2±0.1 d
	AMF+PGPR	38.9±2.1 bc	29.6±0.9 bc	78.6±1.8 b	49.4±1.3 b	18.1±0.3 b	6.7±0.1 b

Effects of AMF and PGPR on growth and nutrient absorption of Matthiola incana under low temperature and weak light stress

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