000			03403nab|a22003737a|4500
001			64616
003			MX-TxCIM
005			20211129143537.0
008			20211s2019||||xxu|||p|op||||00||0|eng|d
022			_a2167-8359
024	8		_ahttps://doi.org/10.7717/peerj.6073
040			_aMX-TxCIM
041			_aeng
100	0		_aYongbin Li​ _925417
245	1	0	_aAmelioration of drought effects in wheat and cucumber by the combined application of super absorbent polymer and potential biofertilizer
260			_aUSA : _bPeerJ Inc., _c2019.
500			_aPeer review
500			_aOpen Access
520			_aBiofertilizer is a good substitute for chemical fertilizer in sustainable agriculture, but its effects are often hindered by drought stress. Super absorbent polymer (SAP), showing good capacity of water absorption and retention, can increase soil moisture. However, limited information is available about the efficiency of biofertilizer amended with SAP. This study was conducted to investigate the effects of synergistic application of SAP and biofertilizers (Paenibacillus beijingensis BJ-18 and Bacillus sp. L-56) on plant growth, including wheat and cucumber. Potted soil was treated with different fertilizer combinations (SAP, BJ-18 biofertilizer, L-56 biofertilizer, BJ-18 + SAP, L-56 + SAP), and pot experiment was carried out to explore its effects on viability of inoculants, seed germination rate, plant physiological and biochemical parameters, and expression pattern of stress-related genes under drought condition. At day 29 after sowing, the highest viability of strain P. beijingensis BJ-18 (264 copies ng−1 gDNA) was observed in BJ-18 + SAP treatment group of wheat rhizosphere soil, while that of strain Bacillus sp. L-56 (331 copies ng−1 gDNA) was observed in the L-56 + SAP treatment group of cucumber rhizosphere soil. In addition, both biofertilizers amended with SAP could promote germination rate of seeds (wheat and cucumber), plant growth, soil fertility (urease, sucrose, and dehydrogenase activities). Quantitative real-time PCR analysis showed that biofertilizer + SAP significantly down-regulated the expression levels of genes involved in ROS scavenging (TaCAT, CsCAT, TaAPX, and CsAPX2), ethylene biosynthesis (TaACO2, CsACO1, and CsACS1), stress response (TaDHN3, TaLEA, and CsLEA11), salicylic acid (TaPR1-1a and CsPR1-1a), and transcription activation (TaNAC2D and CsNAC35) in plants under drought stress. These results suggest that SAP addition in biofertilizer is a good tactic for enhancing the efficiency of biofertilizer, which is beneficial for plants in response to drought stress. To the best of our knowledge, this is the first report about the effect of synergistic use of biofertilizer and SAP on plant growth under drought stress.
546			_aText in English
650		7	_aPaenibacillus _2AGROVOC _925418
650		7	_aDrought stress _2AGROVOC _91081
650		7	_aPolymers _2AGROVOC _918272
650		7	_aWheat _2AGROVOC _91310
650		7	_aBacillus _2AGROVOC _914252
650		7	_aBiofertilizers _2AGROVOC _915097
650		7	_aCucumbers _2AGROVOC _925419
700	0		_aHaowen Shi _925420
700	0		_aHaowei Zhang _925421
700	0		_aSanfeng Chen​ _925422
773	0		_tPeerJ _dUSA : PeerJ Inc., 2019. _x2167-8359 _gv. 7, e6073
856	4		_uhttps://doi.org/10.7717/peerj.6073 _yClick here to access online
942			_cJA _n0 _2ddc
999			_c64616 _d64608