Biodiversity and seasonal variation of the cyanobacterial assemblage in a rice paddy field in Fujian, China

Song, Tieying; Mårtensson, Lotta; Eriksson, Torsten; Zheng, Weiran; Rasmussen, Ulla

doi:10.1016/j.femsec.2005.03.008

Cited by 146 publications

(85 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the present study, no phylotypes most similar to cyanobacteria were observed from the cDNA-DGGE analysis although cyanobacteria are known diazotrophs in the rice paddy (Khan et al 1994;Song et al 2005). In order to examine if a bias was generated by the nested PCR approach and/or from the DGGE analysis, two clone libraries from cDNA samples (UFB04:00 and FB04:00) were generated by direct amplification with the PolF/PolR primers.…”

Section: Discussionmentioning

confidence: 76%

Diazotrophic diversity, nifH gene expression and nitrogenase activity in a rice paddy field in Fujian, China

et al. 2009

Self Cite

View full text Add to dashboard Cite

The diazotrophic communities in a rice paddy field were characterized by a molecular polyphasic approach including DNA/RNA-DGGE fingerprinting, real time RT-PCR analysis of nifH gene and the measurement of nitrogen fixation activities. The investigation was performed on a diurnal cycle and comparisons were made between bulk and rhizosphere / root soil as well as between fertilized / unfertilized soils. Real time RT-PCR showed no significant difference in the total quantity of nifH expression under the conditions investigated. The functional diversity and dynamics of the nifH gene expressing diazotroph community investigated using RT-PCR-DGGE revealed high diurnal variations, as well as variation between different soil types. Most of the sequence types recovered from the DGGE gels and clone libraries clustered within nifH Cluster I and III (65 different nifH sequences in total). Sequence types most similar to Azoarcus spp., Metylococcus spp., Rhizobium spp., Methylocystis spp., Desulfovibrio spp., Geobacter spp., Chlorobium spp., were abundant and indicate that these species may be responsible for the observed diurnal variation in the diazotrophic community structure in these rice field samples. Previously described diazotrophic cyanobacterial genera in rice fields, such as Nostoc and Cyanothece, were present in the samples but not detectable in RT-PCR assays.

show abstract

Section: Discussionmentioning

confidence: 76%

Diazotrophic diversity, nifH gene expression and nitrogenase activity in a rice paddy field in Fujian, China

et al. 2009

Self Cite

View full text Add to dashboard Cite

show abstract

“…The favorable balance of soil N of wetlands, wherein rice can be grown on the same land without any fertilizers and without any detectable decline in yield, attests to the signifi cance of cyanobacterial nitrogen fi xation. Also, indirect evidence for its potentiality is available through demonstrations of enhanced crop growth and yields [25][26][27][28]. The present investigation was aimed towards a less investigated domain of cyanobacteria -the rhizosphere, as a means of identifying isolates which can establish and proliferate in soil and prove better competitors when applied as biofertilizer consortia.…”

Section: Resultsmentioning

confidence: 99%

“…The members of this genus are capable of a variety of modes of C and N nutrition, which adapts them to diverse ecological habitats and the biotrophic transfer of fi xed N to the hosts [10]. Song et al [28] used semi nested PCR and DGGE to evaluate the cyanobacterial diversity and seasonal changes in a selected rice fi eld, and identifi ed 24 phylotypes, including Nostoc and Phormidium, some of which were specifi c to the stage of sampling (i.e. rice growth season).…”

Section: Resultsmentioning

confidence: 99%

“…A nitrogen accretion of [25][26][27][28][29][30] kg N/ha has been attributed to the activities of these ubiquitous organisms and correlated with the abundance of heterocystous forms as fl oating assemblages [1][2][3]. However, in recent years, an urgent need has felt to address inherent problems, which have limited their extensive exploitation, especially their poor establishment in diverse rice ecologies and soil types.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cyanobacterial diversity in the rhizosphere of rice and its ecological significance

et al. 2009

View full text Add to dashboard Cite

This investigation was undertaken to characterize the abundance and genera-wise diversity of cyanobacteria in the rice rhizosphere and nitrogen-fi xing ability of the isolated strains. The cyanobacterial strains belonging to the genera Nostoc and Anabaena comprised 80% of the rhizosphere isolates, which were also effi cient in enhancing the germination and growth of wheat seeds and exhibited signifi cantly high protein accumulation and IAA production. Distinct profi les for the cyanobacterial strains were obtained on amplifi cation with extended Hip 1 primer -HipTG, indicative of the diversity among these strains. Our investigation helped in identifying promising cyanobacterial isolates from the rhizosphere of rice, which can be utilized in developing effi cient plant growth promoting cyanobacterial inoculants.

show abstract

“…Cyanobacteria strains are able to fi x atmospheric nitrogen and enrich the soil, rice, wheat, willow, and other plants with this nutrient [8,[25][26][27]. This natural biofertilizer can play an important role in maintenance and buildup of soil fertility, consequently increasing development and yield of plants as discovered in oats, radish, rice, sugarcane, barley, tomato, chili, cotton, wheat, maize, lettuce, gillyfl ower, grapevine, and willow grown in favorable conditions [8,[25][26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

How Biojodis and Cyanobacteria Alleviate the Negative Influence of Predicted Environmental Constraints on Growth and Physiological Activity of Corn Plants

Piotrowski¹,

Romanowska-Duda²,

Grzesik³

2016

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Information concerning corn plant development within predicted environmental constraints and the possibility of alleviating their negative infl uence by ecological compounds is limited. Thus the aim of our research was to evaluate the physiological activity, growth, and development of corn plants under the expected climate-change conditions and treated with Biojodis (certifi cated extract of humus and active iodine; Jodavita, Lithuania) and Cyanobacteria (a mixture of monocultures of Microcystis aeruginosa MKR 0105 and Anabaena sp. PCC 7120). 'Cyrkon' corn plants (Zea mays L.) were cultivated in several simulated predicted climate conditions, including constant or periodically changing temperature and soil moisture content. During the vegetative season they were treated at three-week intervals using Biojodis at concentrations of 1.0, 2.0, or 3.0%, and Cyanobacteria, and then assessed using growth and physiological parameters.The obtained results showed the corn's different reactions to the applied conditions. Plants that grew at constant or periodically changing different temperatures (0 to 40ºC) or in unsatisfactorily (20% m.c.) or excessively (60% m.c.) watered soils, developed slowly in comparison with those growing at 20ºC and in optimally moistened media (30% m.c.). Watering, spraying, or watering and spraying of corn plants with Biojodis (1, 2, 3%) and a foliar application of Cyanobacteria increased their growth at optimal or unfavourable temperature and in unsatisfactory or excessively moistened soil. The three times spraying with Biojodis (1 or 2%) and with Cyanobacteria was most promising. The plant development changes related to the used compounds and simulated environmental constraints were associated with the changes in indexes of chlorophyll content in leaves, stability of membranes, gas exchange, and activity of acid or alkaline phosphatase and RNase. The above indicates that foliar and soil application of Biojodis and plant sprayings with Cyanobacteria increased growth of corn cultivated under optimal temperature and soil

show abstract

Biodiversity and seasonal variation of the cyanobacterial assemblage in a rice paddy field in Fujian, China

Cited by 146 publications

References 35 publications

Diazotrophic diversity, nifH gene expression and nitrogenase activity in a rice paddy field in Fujian, China

Diazotrophic diversity, nifH gene expression and nitrogenase activity in a rice paddy field in Fujian, China

Cyanobacterial diversity in the rhizosphere of rice and its ecological significance

How Biojodis and Cyanobacteria Alleviate the Negative Influence of Predicted Environmental Constraints on Growth and Physiological Activity of Corn Plants

Contact Info

Product

Resources

About