Earthworms have become a potential source of multi‐beneficial bacteria and effective bioinoculants. Seed biopriming is an efficient inoculation method to apply bacteria prior to sowing, which enhances the chances of bacterial candidates to colonize the rhizosphere and/or establish a liaison with the plant. In this study, we evaluated plant growth‐promoting traits of bacterial strains isolated from the earthworm’s Aporrectodea molleri chloragogenous tissue. In addition, we investigated their prospective use as biopriming agents to enhance Zea mays germination and seedling growth. Results were subjected to principal component analysis for potential correlations between the studied parameters. The bacterial strains displayed different in vitro plant growth‐promoting characteristics and were efficient when applied in vivo as they significantly increased maize germination rate (26–78%), root elongation (67–84%), seedlings fresh weight and dry weight. Aeromonas encheleia TC22 was the most significant strain to influence germination due to its high ability to produce indole‐3‐acetic acid, and along with Pseudomonas azotoformans TC1, they were the most proficient at enhancing seedling root elongation and biomass, which was significantly correlated with their in vitro plant growth‐promoting traits. Our findings indicate that isolates TC22 and TC1 are potent bio‐primers for maize seeds and should be tested further for their use as biopriming inoculants.
Bu çalışmada 6 farklı deterjan (D1, D2, D3, D4, D5 ve D6) çözelti konsantrasyonlarının topraklara sulama suyu olarak 30, 60 ve 90 günlük periyotlarda uygulanması sonucu toprakların fiziksel, kimyasal ve biyolojik özelliklerindeki değişimler araştırılmıştır. Deneme serada yürütülmüş ve deneme süresi boyunca toprakların su içerikleri tarla kapasitesi seviyesinde sabit tutulmuştur. Araştırma sonuçlarına göre; farklı toz deterjanlarının konsantre (Kkon) çözeltileri inkübasyon sürelerinin artışına bağlı olarak toprakların ortalama reaksiyon (pH) değerleri, değişebilir Na, toplam N ve elverişli P ve B içeriklerinde artışa sebep olmuştur. Toprakların CO2 solunumu, bakteri ve mantar sayıları ise inkübasyon sürelerinin artışına bağlı olarak azalma göstermiştir. Toprakların CO2 solunumu ve bakteri ve mantar sayılarında azalmalar ile değişebilir Na, toplam N ve elverişli P ve B içeriklerindeki artışlar hafif bünyeli topraklarda daha yüksek oranda gerçekleşmiştir.
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