Effects of inoculation of plant growth-promoting rhizobacteria on metal uptake by Brassica juncea

Wu, Shengchun; Cheung, Ka Chun; Luo, Yongming; Wong, Ming Hung

doi:10.1016/j.envpol.2005.06.023

Cited by 267 publications

(87 citation statements)

References 28 publications

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“…The inoculation of little seed canary grass with Nitroxin had positive effects on plant growth under Pb stress, most likely by alleviating Pb toxicity, and increased shoot yields were observed as compared to treatments without inoculation (Wu et al 2006). Sharp et al (2011) reported that plant growth-promoting hormones such as auxin and gibberellin produced by rhizobacteria promoted plants growth under conditions of heavy metal stress.…”

Section: Discussionmentioning

confidence: 99%

“…Nitroxin is known to enhance the levels of auxins and gibberellins in plants, and these hormones increase shoot growth and nitrogen translocation to the shoot (Khan 2005). Wu et al (2006) noted that rhizobacteria produce a variety of growth-promoting hormones (including auxins, gibberellins and B vitamins) that stimulate root exudate production. The enhancement of ammonia concentrations in the rhizosphere by Nitroxin is likewise an important functional factor that can improve plant growth, especially in the presence of root exudates, and would explain why plants inoculated with rhizobacteria have higher nitrogen contents and demonstrate greater growth.…”

Section: Discussionmentioning

confidence: 99%

“…Sharp et al (2011) reported that plant growth-promoting hormones such as auxin and gibberellin produced by rhizobacteria promoted plants growth under conditions of heavy metal stress. Nitrogen fixing bacteria such as Azotobacter and Azosperillum are responsible for the biological fixation of N 2 , which enhances nitrogen availability to plants and increases its concentration in the soil (Glick et al 1999, Wu et al 2006, Zhuang et al 2007). The application of Nitroxin during phytoremediation can therefore be very important due to the important roles of these microorganisms (Burd et al 2000, Zhuang et al 2007) in enhancing soil detoxification (Mayak et al 2004).…”

Section: Discussionmentioning

confidence: 99%

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Effectiveness of plant growth promoting rhizobacteria in facilitating lead and nutrient uptake by little seed canary grass

et al. 2012

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-(Effectiveness of plant growth promoting rhizobacteria in facilitating lead and nutrient uptake by little seed canary grass). We investigated the effectiveness of Nitroxin inoculation on lead (Pb) and nutrient uptakes by little seed canary grass. The factors tested included inoculation (or not) with Nitroxin and different soil concentrations of Pb (0, 200, 400 and 800 mgPb kg -1 soil). Increasing soil concentrations of Pb decreased stem, leaf and root dry weights. Shoot phosphorus concentrations increased in parallel with increasing soil Pb concentrations. Nitroxin inoculation did not alter the phosphorus concentration of the roots. The Pb translocation factor was > 1 in inoculated treatments in the Pb soil concentration range of 200 to 400 mg kg -1 ; the translocation factor for 800 mgPb kg -1 with no inoculation of Nitroxin was, however, < 1. Our results indicated that the Pb bioaccumulation factor for little seed canary grass was < 1, indicating that it is a Pb excluding plant.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effectiveness of plant growth promoting rhizobacteria in facilitating lead and nutrient uptake by little seed canary grass

et al. 2012

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“…Chen et al (2007) reported that four plants species P. vittata, C. drummondii, T repens, and L. perenne inoculated with AMF spore G. mosseae enhanced metal tolerance and maintained soil quality. Wu et al (2006) reported that plant inoculated with B. juncea did not greatly alter the metal concentration but effectively promoted the plant growth from growth inhibition, author also documented that the Pb and Zn concentrations in plant tissues and Cu and Cd concentrations in shoots were increased. Plant Trifolium repens L inoculated with AMF and Brevibacillus brevis under nickel supplemented soil showed significant growth improvement, mycorrhizal colonization increased essential nutrients in plants and plants had a decreased amount on Ni absorption (Vivas et al, 2006a).…”

Section: Antagonistic Activitymentioning

confidence: 98%

Spore Associated Bacteria (SAB) of Arbuscular Mycorrhizal Fungi (AMF) and Plant Growth Promoting Rhizobacteria (PGPR) Increase Nutrient Uptake and Plant Growth Under Stress Conditions

Selvakumar¹,

Chandrasekaran²,

Shagol³

et al. 2012

Korean Journal of Soil Science and Fertilizer

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Microorganisms present in the rhizosphere soil plays a vital role in improving the plant growth and soil fertility. Many kinds of fertilizers including chemical and organic has been approached to improve the productivity. Though some of them showed significant improvement in yield, they failed to maintain the soil properties. Rather they negatively affected soil eventually, the land became unsuitable for agricultural. To overcome these problems, microorganisms have been used as effective alternative. For past few decades, plant growth promoting rhizobacteria (PGPR) and arbuscular mycorrhizal fungi (AMF) have been used as effective inoculants to enhance the plant growth and productivity. PGPR improves the plant growth and helps the plant to withstand biotic and abiotic stresses. AM fungi are known to colonize roots of plants and they increase the plant nutrient uptake. Spore associated bacteria (SAB) are attached to spore wall or hyphae and known to increase the AMF germination and root colonization but their mechanism of interaction is poorly known. Better understanding the interactions among AMF, SAB and PGPR are necessary to enhance the quality of inoculants as a biofertilizers. In this paper, current knowledge about the interactions between fungi and bacteria are reviewed and discussed about AMF spore associated bacteria.

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“…Menurut Dary et al, (2010) interaksi antara bakteri dan akar tanaman dapat meningkatkan kemampuan tanaman untuk mengakumulasi logam berat dari tanah menjadi bentuk yang kurang beracun. Wu et al, (2006) menyatakan terjadi peningkatan konsentrasi Cu pada Bransica juncea pada perlakuan penambahan Cu ketika bersimbiosis dengan bakteri dibandingkan dengan kontrol. Pardo dan Pilar (2014) menyatakan bahwa kedelai dan lupin putih yang bersimbiosis dengan Bradyrhizobium menunjukkan pertumbuhan akar dan tunas yang lebih baik.…”

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PENGARUH INOKULASI RHIZOBIUM TERHADAP PENYERAPAN Cu DAN PERTUMBUHAN KACANG TANAH ( Arachis hypogaea L.)

Rahmatullah¹

2018

BIOMA

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This study was conducted to determine the effects of Cu on the growth of peanut plants (Arachis hypogaea L.) inoculated with rhizobium. Cu distribution in plant organs was also analyzed. This study was carried out using factorial completely randomized design with six replications for each treatment. The first factor was CuSO4 concentration, A0: CuSO4 0 mg/3 kg soil, A1: CuSO4 60 mg/3 kg soil, A2: CuSO4 90 mg/3 kg soil and A3: CuSO4 120 mg/3 kg soil). The second factor was legin inoculation B0: without legin inoculation, B1: legin inoculation of 10 g/kg seed, B2: legin inoculation of 20 g/kg seed. The measured parameters were Cu content in plant organs (stems, roots and leaves), Cu concentration in the seeds, the number of root nodules and plant growth. Collected data were statistically analyzed using analysis of variance (Anova) and further tested by DMRT (Duncan Multiple Range Test) at 95% level of confidence.The results showed that application of Cu combined with rhizobium gave impacts on plant growth parameters. In small amounts (60 mg CuSO4/3 kg of soil) could improve plant growth, but excess of CuSO 4 in soil decreased plant growth. Cu was distributed to all plant organs, including seeds. Legin inoculation significantly reduced growth inhibition and Cu absorbtion in excess Cu. High Cu concentration in the rhizosphere could reduced the number of nodule formed. The results also showed accumulation of Cu in the root. Keywords : PENDAHULUANPenelitian tentang akumulasi logam berat pada biji Vigna unguiculata L. dilakukan Ogbuehi et al., (2011) terdapat akumulasi nikel dan seng di biji tanaman pada tanah terkontaminasi. Hal ini akan membahayakan jika dikonsumsi manusia dapat menyebabkan mutasi dan kanker. Menurut Amaliyah (2011) biji bunga matahari dapat mengakumulasi Pb sebesar 25,42 %. Malan dan Farrant (1998) menyatakan pada tanaman kedelai yang terdapat pada media terkontaminasi dapat mengurangi biomassa dan produksi benih. Tingginya logam Cd dan Ni menyebabkan terdapatnya logam tersebut pada kotiledon. Selain itu akan menyebabkan penurunan biomassa biji. Hal ini terjadi karena adanya penurunan produksi lipid, protein dan karbohidrat.Kelebihan Cu di dalam tanah juga akan menginduksi penurunan fotosintesis dan fungsi rambut akar, sehingga menghasilkan pengurangan biomassa (Combroll et al., 2011). Pada kondisi stress oksidatif, tanaman akan

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Effects of inoculation of plant growth-promoting rhizobacteria on metal uptake by Brassica juncea

Cited by 267 publications

References 28 publications

Effectiveness of plant growth promoting rhizobacteria in facilitating lead and nutrient uptake by little seed canary grass

Effectiveness of plant growth promoting rhizobacteria in facilitating lead and nutrient uptake by little seed canary grass

Spore Associated Bacteria (SAB) of Arbuscular Mycorrhizal Fungi (AMF) and Plant Growth Promoting Rhizobacteria (PGPR) Increase Nutrient Uptake and Plant Growth Under Stress Conditions

PENGARUH INOKULASI RHIZOBIUM TERHADAP PENYERAPAN Cu DAN PERTUMBUHAN KACANG TANAH ( Arachis hypogaea L.)

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