丛枝菌根真菌根外菌丝跨膜H <sup>+</sup>和Ca <sup>2+</sup>流对干旱胁迫的响应

丛枝菌根真菌根外菌丝跨膜H ⁺和Ca ²⁺流对干旱胁迫的响应

徐丽娇,郝志鹏,谢伟,李芳,陈保冬

Transmembrane H ⁺ and Ca ²⁺ fluxes through extraradical hyphae of arbuscular mycorrhizal fungi in response to drought stress

Li-Jiao XU,Zhi-Peng HAO,Wei XIE,Fang LI,Bao-Dong CHEN

表2 PEG处理1 h和24 h后丛枝菌根真菌菌丝尖端和侧面P、Ca和Fe的浓度值(能谱分析结果)(平均值±标准偏差, n = 6)

Table 2 Concentrations of P, Ca and Fe at the tip and side of arbuscular mycorrhizal fungi hyphae after treatment by PEG for 1 h and 24 h (determined by energy-dispersive X-ray spectroscopy) (mean ± SD, n = 6)

			P		Ca		Fe
			原子百分比 Atom percentage content (%)	质量分数 Mass percentage content (%)	原子百分比 Atom percentage content (%)	质量分数 Mass percentage content (%)	原子百分比 Atom percentage content (%)	质量分数 Mass percentage content (%)
尖端 Tip	CK	1 h	29.53 ± 2.03^cd	30.03 ± 0.52^d	5.97 ± 0.68^c	6.14 ± 0.72^c	15.86 ± 0.26^c	24.64 ± 2.07^cd
	CK	24 h	31.34 ± 2.34^c	32.85 ± 0.61^d	4.49 ± 0.86^c	5.39 ± 1.27^c	14.60 ± 1.26^c	26.53 ± 1.91^c
	PEG	1 h	38.80 ± 1.07^b	39.62 ± 0.41^c	16.15 ± 0.84^a	18.00 ± 0.87^a	37.15 ± 0.69^a	37.44 ± 1.13^b
	PEG	24 h	51.49 ± 1.63^a	50.46 ± 0.39^a	5.32 ± 1.45^c	4.91 ± 0.66^c	32.48 ± 1.70^ab	52.43 ± 0.49^a
侧面 Side	CK	1 h	23.51 ± 1.12^d	39.01 ± 0.34^c	7.83 ± 1.3^bc	7.88 ± 1.40^bc	12.03 ± 1.11^d	19.51 ± 1.39^d
	CK	24 h	28.00 ± 1.67^cd	43.47 ± 1.07^bc	9.84 ± 0.83^b	10.32 ± 0.92^b	12.07 ± 0.78^d	19.17 ± 0.87^d
	PEG	1 h	37.69 ± 0.84^b	37.51 ± 1.43^c	10.34 ± 1.12^b	12.03 ± 0.75^b	28.54 ± 0.76^b	33.28 ± 1.13^b
	PEG	24 h	56.12 ± 2.21^a	45.04 ± 0.47^b	14.99 ± 0.73^a	16.21 ± 0.40^a	35.09 ± 1.43^a	41.70 ± 0.60^ab