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@ARTICLE{Kaloterakis:904470,
      author       = {Kaloterakis, Nikolaos and van Delden, Sander H. and
                      Hartley, Sue and De Deyn, Gerlinde B.},
      title        = {{S}ilicon application and plant growth promoting
                      rhizobacteria consisting of six pure {B}acillus species
                      alleviate salinity stress in cucumber ({C}ucumis sativus
                      {L})},
      journal      = {Scientia horticulturae},
      volume       = {288},
      issn         = {0304-4238},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2021-06040},
      pages        = {110383 -},
      year         = {2021},
      abstract     = {As water quality and availability decreases in many parts
                      of the world, salinity is becoming a major challenge that
                      reduces crop yield, even in soilless cultivation systems.
                      Therefore, novel strategies are needed to promote plant salt
                      tolerance in these systems. We hypothesized that the
                      non-essential element silicon (Si) and plant-growth
                      promoting Bacillus spp. can alleviate salt stress of
                      cucumber (Cucumis sativus L.) grown in hydroponics. We
                      tested this hypothesis by growing cucumber seedlings with
                      and without salt stress (75 mM NaCl) and with and without
                      1.5 mM Si and an inoculum of six rhizosphere Bacillus
                      species in a full-factorial design. Seedlings were grown in
                      a climate room for two weeks in independent deep-water
                      culture containers. The applied salt stress strongly reduced
                      plant biomass, whereas Si application under salt stress
                      resulted in a substantial increase in cucumber shoot and
                      root biomass. This beneficial impact of Si was also observed
                      in increased plant height, leaf area, specific leaf area,
                      root length, specific root length, root surface area and
                      root volume. The Bacillus species increased root dry weight,
                      specific leaf area as well as specific root length. In
                      seedlings grown under salt stress, Si application increased
                      shoot and root Si concentration, whereas Cl− concentration
                      was reduced in the plant shoots. A reduction in Cl−
                      concentration of the shoots was also apparent in the
                      Bacillus treatment. Under non-stress conditions, neither Si
                      nor Bacillus species affected plant growth parameters.
                      However, shoot mineral content was affected as Si
                      application reduced shoot Cl−and Ca2+ concentrations, and
                      inoculation with Bacillus species decreased K concentration.
                      We conclude that Si does promote salt stress alleviation
                      during the early growth stage of cucumber grown in deep
                      water culture and this has implications for soilless crop
                      production. Seed inoculation with Bacillus species showed a
                      beneficial trend for some plant growth characteristics and
                      nutrient status under high salinity, although not as
                      pronounced as for Si.},
      cin          = {IBG-3},
      ddc          = {640},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000681070500004},
      doi          = {10.1016/j.scienta.2021.110383},
      url          = {https://juser.fz-juelich.de/record/904470},
}