Physiological Response and Effect of S3307 on Water Stress of Adzuki Bean Root

doi:10.13304/j.nykjdb.2021.0155

Abstract

Abstract:

In order to explore the effects of uniconazole （S3307） on root physiology and yield of adzuku bean under flooding stress， the seedling of Longxiaodou 4 （LXD 4） and Tianjinhong （TJH） were treated in pot by flooding stress for 5 d， and foliar sprayed with S3307 at seedling stage. The accumulation of reactive oxygen species， membrane lipid peroxidation， activities of antioxidant enzymes in adzuki bean roots， and yield were determined. The results showed that root physiological indexes after flooding stress changed during seedling stage， the contents of H₂O₂， malonaldehyde （MDA）， proline， soluble sugar （SS） and soluble protein （SP） signficantly increased， as the same as the activities of SOD， POD and CAT. Waterlogging for 3~5 d resulted that the single pot outputs of LXD 4 significantly decreased from 4.77% to 8.40%， and those of TJH decreased from 5.59% to 9.91%. S3307 had the effect on resisting flooding stress， and could effectively increase the contents of proline and SS in the root of adzuki bean， reduce the content of H₂O₂ and MDA， increase the activities of SOD， POD and CAT， and reduce the SOD/CAT ratio， significantly. Foliar spraying S3307 significantly increased the outputs of LXD 4 and TJH by 2.85% and 5.29%， respectively， under waterlogging treatment for 4 d. In conclusion， there were significant differences under physiological stress on reactive oxygen species accumulation， membrane lipid peroxidation and antioxidant enzyme activities among different varieties of adzuki bean under flooding stress. Spraying S3307 could effectively alleviate the effects of flooding stress on the physiology and yield in adzuki bean， which provided a theoretical basis for further studying the physiological mechanism of adzuki bean resistance to flooding at the seedling stage and improving the yield of adzuki bean under flooding stress.

Key words: uniconazole （S3307）, adzuki bean, flooding stress, root physiology, yield

摘要：

为探究幼苗期淹水胁迫及喷施烯效唑（ S3307）对小豆（ Vigna angularis）根系生理代谢和产量的影响，以龙小豆4号和天津红为材料，盆栽条件下，苗期预喷施S3307，然后进行连续淹水5 d处理，测定淹水后小豆根系活性氧物质的积累、膜脂过氧化程度、抗氧化酶活性及小豆产量。结果表明，幼苗期淹水胁迫引起小豆根系H₂O₂和丙二醛（malonaldehyde，MDA）、脯氨酸、可溶性糖和可溶性蛋白含量显著提高，超氧化物歧化酶（superoxide dismutase，SOD）、过氧化物酶（peroxidase，POD）和过氧化氢酶（catalase，CAT）活性显著提高；淹水胁迫3~5 d导致龙小豆4号单盆产量显著降低4.77%~8.40%，天津红单盆产量显著降低5.59%~9.91%。喷施S3307具有抵御淹水胁迫的作用，能有效增加小豆根系脯氨酸和可溶性糖含量，显著降低H₂O₂和MDA含量，显著提高SOD、POD和CAT活性并降低SOD/CAT比值。喷施S3307使淹水4 d的龙小豆4号产量显著提高2.85%，使天津红产量显著提高5.29%。综上，淹水胁迫下，不同品种小豆根系在活性氧物质积累、膜质过氧化、抗氧化酶活性以及渗透调节等方面的生理响应存在显著差异；喷施S3307能够有效缓解淹水胁迫对小豆生理和产量的影响，为进一步研究小豆苗期抵御淹水胁迫的生理机制及提高淹水胁迫下小豆产量提供理论依据。

关键词: S3307, 小豆, 淹水胁迫, 根系生理, 产量

CLC Number:

S521

Hongtao XIANG, Wan LI, Ning HE, Qiang WANG, Lingling ZENG, Manli WANG, Chunjie YANG, Yanjiang FENG. Physiological Response and Effect of S3307 on Water Stress of Adzuki Bean Root[J]. Journal of Agricultural Science and Technology, 2022, 24(9): 39-49.

项洪涛, 李琬, 何宁, 王强, 曾玲玲, 王曼力, 杨纯杰, 冯延江. 小豆根系对水分胁迫的生理响应及S3307的缓解效应[J]. 中国农业科技导报, 2022, 24(9): 39-49.

Figures/Tables 11

Table 1 Experiment design

处理Treatment	药剂 Pesticide	水分 Water
T1	蒸馏水 Distilled water	正常土壤水分 Suitable soil moisture
T2	S3307	正常土壤水分 Suitable soil moisture
T3	蒸馏水Distilled water	淹水胁迫 Flooding stress
T4	S3307	淹水胁迫 Flooding stress

Fig. 1 H2O2 contents in root of adzuki bean seedlings under different treatmentsNote： Different lowercase letters indicate significant differences between different treatments of same variety at P<0.05 level.

Fig. 2 MDA contents in root of adzuki bean seedlings under different treatmentsNote： Different small letters indicate significant difference between different treatments of same variety at P<0.05 level.

Fig. 3 SOD activities in root of adzuki bean seedlings under different treatmentsNote： Different small letters indicate significant difference between different treatments of same variety at P<0.05 level.

Fig. 4 POD activities in root of adzuki bean seedlings under different treatmentsNote： Different small letters indicate significant difference between different treatments of same variety at P<0.05 level.

Fig. 5 CAT activities in root of adzuki bean seedlings under different treatmentsNote： Different small letters indicate significant difference between different treatments of same variety at P<0.05 level.

Table 2 SOD/CAT ratio in root of seedlings of adzuki bean under different treatments

品种 Variety	处理 Treatment	SOD/CAT ratio
品种 Variety	处理 Treatment	1 d	2 d	3 d	4 d	5 d
龙小豆4号 Longxiaodou 4	T1	12.12±4.09 a	12.57±2.74 a	13.50±2.55 a	12.67±2.61 a	11.91±1.48 ab
	T2	10.62±1.83 ab	13.07±1.23 a	12.26±3.55 a	11.39±1.98 a	11.17±2.37 ab
	T3	9.04±0.25 ab	8.06±0.46 ab	7.09±0.36 a	11.10±1.64 a	16.09±2.25 a
	T4	7.58±0.25 b	6.88±0.36 b	6.18±0.23 a	6.76±0.40 a	9.59±0.81 b
天津红 Tianjinhong	T1	14.96±3.09 a	13.14±1.04 a	14.87±2.85 a	12.71±1.00 a	11.41±1.00 a
	T2	11.05±2.66 a	14.83±1.44 a	14.38±3.08 a	11.80±0.78 a	9.83±0.67 a
	T3	8.70±0.54 a	7.48±0.29 b	6.78±0.20 b	9.34±0.47 a	9.51±0.48 a
	T4	8.02±0.41 a	7.72±0.59 b	6.86±0.66 b	10.04±0.97 a	8.93±0.63 a

Fig. 6 Proline contents in root of adzuki bean seedlings under different treatmentsNote： Different small letters indicate significant difference between different treatments of same variety at P<0.05 level.

Fig. 7 Soluble sugar contents in root of adzuki bean seedlings under different treatmentsNote： Different small letters indicate significant difference between different treatments of same variety at P<0.05 level.

Fig. 8 Soluble protein contents in root of adzuki bean seedlings under different treatmentsNote： Different small letters indicate significant difference between different treatments of same variety at P<0.05 level.

Table 3 Yield per pot of adzuki bean under different treatments

品种 Variety	处理 Treatment	单盆产量 Yield per pot/g
品种 Variety	处理 Treatment	1 d	2 d	3 d	4 d	5 d
龙小豆4号 Longxiaodou 4	T1	30.37±0.22 a	30.37±0.22 a	30.37±0.22 ab	30.37±0.22 a	30.37±0.22 a
	T2	30.72±0.23 a	30.72±0.23 a	30.72±0.23 a	30.72±0.23 a	30.72±0.23 a
	T3	30.12±0.39 a	29.85±0.39 a	28.92±0.24 c	28.07±0.25 b	27.82±0.86 b
	T4	30.27±0.16 a	29.97±0.32 a	29.73±0.17 b	28.87±0.13 a	28.32±0.25 b
天津红 Tianjinhong	T1	23.62±0.39 b	23.62±0.39 b	23.62±0.39 b	23.62±0.39 b	23.62±0.39 b
	T2	24.85±0.16 a	24.85±0.16 a	24.85±0.16 a	24.85±0.16 a	24.85±0.16 a
	T3	22.57±1.07 b	22.70±0.50 b	22.30±0.20 c	21.73±0.22 c	21.28±0.15 d
	T4	23.45±0.33 ab	23.10±0.33 b	22.92±0.13 bc	22.88±0.12 b	22.40±0.16 c

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