Bulletin of Botanical Research ›› 2024, Vol. 44 ›› Issue (4): 590-601.doi: 10.7525/j.issn.1673-5102.2024.04.011
• Physiology and Ecology • Previous Articles
Yixue LI1, Dongmei YE1, Longfei HAO1(), Tingyan LIU2, Jiajing DUAN3, Zhengying NIE4
Received:
2023-10-28
Online:
2024-07-20
Published:
2024-07-09
Contact:
Longfei HAO
E-mail:haolongfei_00@126.com
CLC Number:
Yixue LI, Dongmei YE, Longfei HAO, Tingyan LIU, Jiajing DUAN, Zhengying NIE. The Responses of Rhizosphere Soil of Caragana korshinskii under Soil Sterilization, AM Fungi Inoculation and N Addition[J]. Bulletin of Botanical Research, 2024, 44(4): 590-601.
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URL: https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2024.04.011
Table 1
Nitrogen addition amount of different nitrogen treatments
施入时间 Application time | 累计施入次数 Cumulative application times | 不施氮处理 Zero nitrogen (CK) | 低氮处理 Low nitrogen treatment (LN) | 高氮处理 High nitrogen treatment (HN) |
---|---|---|---|---|
6月 June | 1 | 0 | 0.16 | 0.31 |
2 | 0 | 0.16 | 0.31 | |
3 | 0 | 0.16 | 0.31 | |
7月 July | 4 | 0 | 0.33 | 0.66 |
5 | 0 | 0.33 | 0.66 | |
6 | 0 | 0.33 | 0.66 | |
8月 August | 7 | 0 | 0.37 | 0.73 |
8 | 0 | 0.37 | 0.73 | |
9 | 0 | 0.37 | 0.73 | |
9月 September | 10 | 0 | 0.22 | 0.45 |
11 | 0 | 0.22 | 0.45 |
Fig.1
The relative abundance of microorganisms in rhizosphere soil of C. korshinskii seedlings under soil sterilization,seedling inoculation and nitrogen addition treatmentsDifferent lowercase and capital letters indicated that the relative abundance of bacteria and fungus was significantly different among the treatments,respectively(P<0.05);the same as below.
Table 2
Microbial biomass and its stoichiometric characteristics in rhizosphere soil of C. korshinskii seedings under soil sterilization,seedling inoculation and nitrogen addition treatments
处理 Treatments | MBC/(mg·kg-1) | MBN/(mg·kg-1) | MBP/(mg·kg-1) | MBC∶MBN | MBC∶MBP | MBN∶MBP | ||
---|---|---|---|---|---|---|---|---|
+S | -M | CK | 95.12±12.78cd | 1.81±0.02f | 2.28±0.41bcd | 52.50±7.26a | 42.69±2.84bc | 0.86±0.18ef |
LN | 73.29±8.28d | 3.87±0.84def | 1.89±0.49cd | 19.81±2.16cde | 41.79±5.81bc | 2.09±0.09de | ||
HN | 70.85±14.74d | 2.63±0.53def | 2.95±0.40bcd | 26.91±0.51c | 23.66±1.99d | 0.88±0.07ef | ||
+M | CK | 85.03±14.15d | 2.19±0.25ef | 3.34±0.32b | 38.72±3.19b | 25.24±2.10d | 0.65±0.02f | |
LN | 90.60±8.69cd | 5.27±0.80cdef | 3.13±0.46bcd | 17.55±1.54cdef | 29.59±3.23cd | 1.68±0.05def | ||
HN | 166.17±3.16a | 7.24±1.29cd | 3.46±0.24b | 24.48±4.36cd | 48.33±2.35b | 2.07±0.28de | ||
-S | -M | CK | 142.28±24.25a | 14.17±3.66b | 1.75±0.25d | 10.85±1.94efg | 81.77±7.45a | 7.83±1.02a |
LN | 136.70±6.34ab | 19.25±0.69a | 3.15±0.28bc | 7.10±0.16g | 43.92±3.33b | 6.18±0.39b | ||
HN | 157.94±10.83a | 17.28±1.23ab | 3.04±0.61bcd | 9.16±0.35fg | 55.13±8.12b | 6.01±0.78b | ||
+M | CK | 100.79±3.79bcd | 16.73±1.09ab | 3.49±0.26b | 6.05±0.23g | 29.05±1.29cd | 4.80±0.04c | |
LN | 127.76±9.01abc | 6.77±1.47cde | 2.93±0.57bcd | 20.31±3.54cde | 45.54±4.85b | 2.31±0.24d | ||
HN | 129.19±14.33abc | 8.89±1.62c | 5.03±0.50a | 14.90±1.21defg | 25.62±0.40d | 1.75±0.17def | ||
灭菌处理Sterilization treatment(S) | *** | *** | NS | *** | *** | *** | ||
接菌处理Inoculation treatment(M) | NS | * | *** | NS | *** | *** | ||
氮添加处理Nitrogen addition(N) | * | NS | ** | *** | NS | * | ||
灭菌处理×接菌处理(S×M) | *** | *** | NS | ** | *** | *** | ||
灭菌处理×氮添加处理(S×N) | NS | * | NS | *** | * | *** | ||
接菌处理×氮添加处理(M×N) | ** | ** | NS | ** | *** | NS | ||
灭菌处理×接菌处理×氮添加处理(S×M×N) | * | ** | NS | NS | *** | NS |
Table 3
Enzymatic activities and its stoichiometric characteristics in rhizosphere soil of C. korshinskii seedings under soil sterilization, seedling inoculation and nitrogen addition treatments
处理Treatments | EC/(nmol·g-1·h-1) | EN/(nmol·g-1·h-1) | EP/(nmol·g-1·h-1) | EC∶EN | EC∶EP | EN∶EP | VL | VA/(°) | EC∶EN∶EP | ||
---|---|---|---|---|---|---|---|---|---|---|---|
+S | -M | CK | 2.41±0.29f | 5.90±0.59g | 7.49±0.14e | 0.48±0.04d | 0.43±0.06d | 0.88±0.04f | 0.65±0.07d | 48.84±1.48a | 1∶2∶2 |
LN | 2.58±0.23f | 19.16±2.64f | 8.36±0.48e | 0.32±0.02e | 0.44±0.04d | 1.38±0.03abc | 0.55±0.04d | 35.90±0.51def | 1∶3∶2 | ||
HN | 2.53±0.09f | 15.51±0.80f | 8.23±0.99e | 0.34±0.01e | 0.44±0.01d | 1.31±0.06cd | 0.55±0.01d | 37.33±0.22cd | 1∶2∶2 | ||
+M | CK | 6.75±0.87e | 15.28±1.80f | 8.25±0.39e | 0.70±0.02b | 0.89±0.04bc | 1.29±0.03cd | 1.13±0.04bc | 37.90±0.41cd | 1∶1∶1 | |
LN | 6.66±0.20e | 12.95±0.70fg | 9.64±0.59e | 0.74±0.01b | 0.84±0.01c | 1.13±0.01e | 1.12±0.02bc | 41.48±0.18b | 1∶1∶1 | ||
HN | 7.31±0.82e | 14.43±2.18f | 8.80±1.40e | 0.75±0.01b | 0.92±0.06bc | 1.23±0.06d | 1.19±0.05bc | 39.12±1.42c | 1∶1∶1 | ||
-S | -M | CK | 19.79±0.14a | 40.63±2.13e | 17.96±0.37d | 0.81±0.01a | 1.03±0.01a | 1.28±0.01cd | 1.31±0.01a | 37.96±0.22cd | 1∶1∶1 |
LN | 19.22±1.60ab | 54.92±0.99d | 23.15±2.24b | 0.74±0.02b | 0.94±0.01ab | 1.28±0.03cd | 1.19±0.02b | 38.00±0.53cd | 1∶1∶1 | ||
HN | 14.57±0.36d | 66.62±6.35c | 19.04±0.99cd | 0.64±0.01c | 0.91±0.01bc | 1.42±0.02ab | 1.11±0.01bc | 35.09±0.12ef | 1∶1∶1 | ||
+M | CK | 16.48±0.69cd | 77.26±3.91b | 19.40±1.46cd | 0.64±0.00c | 0.95±0.01ab | 1.47±0.02a | 1.15±0.01bc | 34.25±0.22f | 1∶1∶1 | |
LN | 16.38±0.19cd | 81.62±2.30ab | 22.03±0.15bc | 0.63±0.00c | 0.90±0.00bc | 1.42±0.01ab | 1.10±0.00bc | 35.09±0.01ef | 1∶1∶1 | ||
HN | 17.50±0.77bc | 88.12±2.64a | 27.50±1.67a | 0.64±0.01c | 0.86±0.00bc | 1.35±0.01bc | 1.08±0.01c | 36.47±0.15de | 1∶1∶1 | ||
灭菌处理Sterilization treatment(S) | *** | *** | *** | *** | *** | *** | *** | *** | |||
接菌处理Inoculation treatment(M) | *** | *** | ** | *** | *** | ** | *** | *** | |||
氮添加处理Nitrogen addition(N) | NS | *** | ** | *** | NS | *** | ** | *** | |||
灭菌处理×接菌处理(S×M) | *** | *** | NS | *** | *** | NS | *** | NS | |||
灭菌处理×氮添加处理(S×N) | * | ** | NS | NS | * | *** | NS | *** | |||
接菌处理×氮添加处理(M×N) | ** | ** | * | *** | NS | *** | NS | *** | |||
灭菌处理×接菌处理×氮添加处理 (S×M×N) | * | NS | ** | * | NS | *** | NS | *** |
Table 4
Available nutrients and its stoichiometric characteristics in rhizosphere soil of C. korshinskii seedings under soil sterilization,seedling inoculation and nitrogen addition treatments
处理Treatments | DOC/(mg·kg-1) | AN/(mg·kg-1) | AP/(mg·kg-1) | DOC∶AN | DOC∶AP | AN∶AP | ||
---|---|---|---|---|---|---|---|---|
+S | -M | CK | 3.78±0.07bc | 5.95±0.33de | 2.89±0.11bcd | 0.64±0.02ef | 1.31±0.02cde | 2.05±0.03bc |
LN | 3.63±0.22cd | 7.38±0.28ab | 3.05±0.13bc | 0.49±0.02f | 1.19±0.04de | 2.42±0.01b | ||
HN | 3.64±0.11cd | 8.04±1.01a | 2.53±0.07def | 0.46±0.04f | 1.44±0.01abc | 3.16±0.32a | ||
+M | CK | 3.29±0.19cd | 2.44±0.05e | 2.09±0.06f | 1.35±0.05bc | 1.57±0.04ab | 1.17±0.01ef | |
LN | 2.86±0.22d | 3.75±0.54de | 2.09±0.08f | 0.78±0.09ef | 1.37±0.06bcd | 1.79±0.21cd | ||
HN | 3.11±0.10cd | 3.69±0.04de | 2.23±0.17ef | 0.84±0.02de | 1.41±0.06bc | 1.67±0.10cd | ||
-S | -M | CK | 3.95±0.60bc | 3.74±0.59de | 2.65±0.19cde | 1.23±0.06c | 1.47±0.12abc | 1.22±0.16ef |
LN | 3.23±0.07cd | 3.65±0.87de | 2.52±0.23def | 1.13±0.01cd | 1.30±0.08cde | 1.15±0.06ef | ||
HN | 3.53±0.11cd | 4.55±0.93cd | 3.07±0.13bc | 0.64±0.00ef | 1.15±0.03e | 1.79±0.03cd | ||
+M | CK | 5.05±0.11a | 3.36±0.14de | 3.23±0.14b | 1.61±0.05b | 1.57±0.03ab | 0.98±0.03fg | |
LN | 5.08±0.52a | 3.09±0.69de | 3.67±0.18a | 2.02±0.26a | 1.37±0.07bcd | 0.70±0.09g | ||
HN | 4.57±0.05ab | 4.48±0.66cd | 2.83±0.21bcd | 1.11±0.21cd | 1.63±0.11a | 1.54±0.16de | ||
灭菌处理Sterilization treatment(S) | *** | *** | *** | *** | NS | *** | ||
接菌处理Inoculation treatment(M) | * | *** | NS | *** | *** | *** | ||
氮添加处理Nitrogen addition(N) | NS | * | NS | *** | ** | *** | ||
灭菌处理×接菌处理(S×M) | *** | *** | *** | NS | NS | *** | ||
灭菌处理×氮添加处理(S×N) | NS | NS | NS | *** | NS | ** | ||
接菌处理×氮添加处理(M×N) | NS | NS | NS | NS | NS | NS | ||
灭菌处理×接菌处理×氮添加处理(S×M×N) | NS | NS | *** | * | ** | * |
Fig.2
Pathways of rhizosphere soil ecological stoichiometry characteristics on microbial nutrient limitations based on partial least squares path modeling(PLS?PM)Solid and dotted arrows indicated positive and negative effects,respectively;the standardized path coefficients was indicated by the numbers on the arrow(?.P<0.05;??.P<0.01;NS.No-significnat).
Fig.3
Total effects of microbial regulation,nitrogen addition treatment,microbial biomass stoichiometry,enzymatic stoichiometry,available nutrients stoichiometry on microbial nutrient limitations based on partial least squares path modelingMR,ND,MBS,ES and ANS were microbial regulation,nitrogen addition treatment, microbial biomass stoichiometric ratio,enzyme stoichiometric ratio and available nutrient stoichiometric ratio,respectively.
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