Mitigation of salt stress in radish (Raphanus Sativus I.) by plant growth promoting rhizobacteria

YILDIRIM E., TURAN M., Donmez M. F.

ROMANIAN BIOTECHNOLOGICAL LETTERS, cilt.13, sa.5, ss.3933-3943, 2008 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 5
  • Basım Tarihi: 2008
  • Dergi Adı: ROMANIAN BIOTECHNOLOGICAL LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), BIOSIS, CAB Abstracts, Veterinary Science Database
  • Sayfa Sayıları: ss.3933-3943
  • Anahtar Kelimeler: Ameliorative effect, radish, Staphylococcus kloosii, Kocuria erythromyxa, salinity stress, WHEAT SEEDLINGS, TOLERANCE, SALINITY, BACTERIA, PHOSPHATE, CROPS, INOCULATION, RESISTANCE
  • Atatürk Üniversitesi Adresli: Evet

Özet

The effects of Staphylococcus kloosii EY37 and Kocuria erythromyxa EY43 on some agro-physical properties such as shoot-root fresh weight, shoot-root dry weight, emergence percent (EP), chlorophyll content, leaf number per plant (LNPP), leaf relative water content (LRWC), electrolyte leak-age (EL) and ionic composition of leaves of radish were tested tinder saline conditions. Seeds were soaked in the bacterial suspension incubated of 27 degrees C for 2 h. After incubation the seeds were air-dried before use. Salinity treatments were established by adding 0 and 80 mM of NaCl to a base complete nutrient solution. In control, salt treatment significantly decreased shoot and root fresh-dry weight, EP, LNPP, LRWC, chlorophyll and mineral content. but increased E, L. However, EY37 and EY43 treatments under saline conditions significantly increased shoot fresh weight (79.5%, 56.2%), root fresh weight (100.0%-52.2%), shoot dry weight (108.1%-97.0%), root dry weight (150.6%-157.4%), LNPP (34.1-12.8), LRWC (37.0%-20.6%), EP (17.2%-14.1%) and chlorophyll content (21.2%-24.9%), but decrease EL (19.5%-26.9%) compared to the control (without plant growth promoting rhizobial bacteria (PGPR)). Ionic compositions of the leaves of radish plants were significantly affected by salinity and bacterial inoculations. All nutrient element contents investigated were significantly decreased except for Na and Cl under salt stress, which were significantly increased by salt treatment. Bacterial inoculation under salinity conditions usually increased plant nutrient element (PNE) contents of the leaves. It can be concluded from the study that treatment with EY37 and EY43 strains can ameliorate the deleterious effects of salt stress on nutrition and on the growth parameters of radish plants tinder salinity conditions; PGRB treatment could offer an economical and simple application technology to alleviate the moderately salt sensitive radish production problems in and soil caused by high salinity.