scholarly journals Screening of Rhizosphere Bacteria From Rice Fields in The Coastal Area as Acc-Deaminase and Auxin Producer

2015 ◽  
Vol 5 (1) ◽  
pp. 27 ◽  
Author(s):  
Annisyia Zarina Putri ◽  
Djarot Sasongko ◽  
Dwi N Susilowati
Keyword(s):  
Coastal Area ◽  
Acc Deaminase ◽  
Rice Fields ◽  
Rhizosphere Bacteria

Biological control potential of rhizosphere bacteria with ACC-deaminase activity against Fusarium culmorum in wheat

2020 ◽  
Vol 107 (2) ◽  
pp. 105-112
Author(s):  
Gül Imriz ◽  
Fatih Özdemir ◽  
Mehmet Sait Karaca ◽  
Murat Nadi Taş ◽  
İlker Topal ◽  
...  
Keyword(s):  
Biological Control ◽  
Fusarium Culmorum ◽  
Acc Deaminase ◽  
Rhizosphere Bacteria ◽  
Control Potential ◽  
Biological Control Potential

PENDAMPINGAN MANAJEMEN PENGELOLAAN WISATA TRACKING DI DESA CEPAKA KEDIRI TABANAN

2021 ◽  
Vol 1 (1) ◽  
pp. 8-12
Author(s):  
I Made Hedy Wartana ◽  
AA. Ketut Sri Asih ◽  
NLK.Julyanti Paramita
Keyword(s):  
Coastal Area ◽  
Rice Fields ◽  
Village Community ◽  
Route Management ◽  
Economic Contribution ◽  
Tourist Village

The condition of Cepaka Village is that it is strategically located and surrounded by large expanses of rice fields which have been developed into a tourist village. Because in Cepaka village, several villas have been established which are usually inhabited by foreign guests who want a rural atmosphere and have close access to the coastal area. The existing traking routes have not been optimally utilized so that economically, the existence of the traking routes is not yet visible. This traking route is a potential that requires serious management so that the route can be worked on optimally so that later there will be an economic contribution. Of the problems faced, the solution that can be given is to rearrange the traking properly so that it is more comfortable and beautiful so that the route is more attractive. to be visited and can be offered as a package in traking tours. Another solution offered is traking route management, which can be done by recording the number of tourist accommodations in Cepaka village because the restaurants and villas in Cepaka village can later be invited to collaborate to take advantage of the traking route's facilities which are used as mutually supportive packages. agreement with tourism actors regarding rights and obligations so that the contributions obtained are mutually beneficial, determine the entrance of a centralized trekking so that it can invite the attention of the community for their curiosity, involve the participation of the Cepaka Village community in order to maintain environmental cleanliness for the realization of a beautiful atmosphere in Cepaka village

scholarly journals ACC deaminase-producing rhizosphere bacteria modulate plant responses to flooding

2017 ◽  
Vol 105 (4) ◽  
pp. 979-986 ◽  
Author(s):  
Mohammadhossein Ravanbakhsh ◽  
Rashmi Sasidharan ◽  
Laurentius A. C. J. Voesenek ◽  
George A. Kowalchuk ◽  
Alexandre Jousset
Keyword(s):  
Acc Deaminase ◽  
Rhizosphere Bacteria ◽  
Plant Responses

scholarly journals Bacterial Communities Associated with Flowering Plants of the Ni Hyperaccumulator Thlaspi goesingense

2004 ◽  
Vol 70 (5) ◽  
pp. 2667-2677 ◽  
Author(s):  
Rughia Idris ◽  
Radoslava Trifonova ◽  
Markus Puschenreiter ◽  
Walter W. Wenzel ◽  
Angela Sessitsch
Keyword(s):  
16S Rrna ◽  
Acc Deaminase ◽  
Rhizosphere Bacteria ◽  
Rrna Gene ◽  
Gram Positive ◽  
16S Rrna Sequence ◽  
Plant Microbe Interaction ◽  
Gram Positive Bacteria ◽  
High Concentrations ◽  
Methylobacterium Mesophilicum

ABSTRACT Thlaspi goesingense is able to hyperaccumulate extremely high concentrations of Ni when grown in ultramafic soils. Recently it has been shown that rhizosphere bacteria may increase the heavy metal concentrations in hyperaccumulator plants significantly, whereas the role of endophytes has not been investigated yet. In this study the rhizosphere and shoot-associated (endophytic) bacteria colonizing T. goesingense were characterized in detail by using both cultivation and cultivation-independent techniques. Bacteria were identified by 16S rRNA sequence analysis, and isolates were further characterized regarding characteristics that may be relevant for a beneficial plant-microbe interaction—Ni tolerance, 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase and siderophore production. In the rhizosphere a high percentage of bacteria belonging to the Holophaga/Acidobacterium division and α-Proteobacteria were found. In addition, high-G+C gram-positive bacteria, Verrucomicrobia, and microbes of the Cytophaga/Flexibacter/Bacteroides division colonized the rhizosphere. The community structure of shoot-associated bacteria was highly different. The majority of clones affiliated with the Proteobacteria, but also bacteria belonging to the Cytophaga/Flexibacter/Bacteroides division, the Holophaga/Acidobacterium division, and the low-G+C gram-positive bacteria, were frequently found. A high number of highly related Sphingomonas 16S rRNA gene sequences were detected, which were also obtained by the cultivation of endophytes. Rhizosphere isolates belonged mainly to the genera Methylobacterium, Rhodococcus, and Okibacterium, whereas the majority of endophytes showed high levels of similarity to Methylobacterium mesophilicum. Additionally, Sphingomonas spp. were abundant. Isolates were resistant to Ni concentrations between 5 and 12 mM; however, endophytes generally tolerated higher Ni levels than rhizosphere bacteria. Almost all bacteria were able to produce siderophores. Various strains, particularly endophytes, were able to grow on ACC as the sole nitrogen source.

Rhizosphere bacteria ofCostulariaspp. from ultramafic soils in New Caledonia: diversity, tolerance to extreme edaphic conditions, and role in plant growth and mineral nutrition

2013 ◽  
Vol 59 (3) ◽  
pp. 164-174 ◽  
Author(s):  
Mathieu Gonin ◽  
Simon Gensous ◽  
Alexandre Lagrange ◽  
Marc Ducousso ◽  
Hamid Amir ◽  
...  
Keyword(s):  
Plant Growth ◽  
New Caledonia ◽  
Acc Deaminase ◽  
Rhizosphere Bacteria ◽  
Shoot Biomass ◽  
Ultramafic Soils ◽  
Edaphic Conditions ◽  
Colony Forming Units ◽  
Plant Growth Promoting ◽  
Calcium Magnesium

Rhizosphere bacteria were isolated from Costularia spp., pioneer sedges from ultramafic soils in New Caledonia, which is a hotspot of biodiversity in the South Pacific. Genus identification, ability to tolerate edaphic constraints, and plant-growth-promoting (PGP) properties were analysed. We found that 105colony-forming units per gram of root were dominated by Proteobacteria (69%) and comprised 21 genera, including Burkholderia (28%), Curtobacterium (15%), Bradyrhizobium (9%), Sphingomonas (8%), Rhizobium (7%), and Bacillus (5%). High proportions of bacteria tolerated many elements of the extreme edaphic conditions: 82% tolerated 100 μmol·L–1chromium, 70% 1 mmol·L–1nickel, 63% 10 mmol·L–1manganese, 24% 1 mmol·L–1cobalt, and 42% an unbalanced calcium/magnesium ratio (1/16). These strains also exhibited multiple PGP properties, including the ability to produce ammonia (65%), indole-3-acetic acid (60%), siderophores (52%), and 1-aminocyclopropane-1-carboxylate (ACC) deaminase (39%); as well as the capacity to solubilize phosphates (19%). The best-performing strains were inoculated with Sorghum sp. grown on ultramafic substrate. Three strains significantly enhanced the shoot biomass by up to 33%. The most successful strains influenced plant nutrition through the mobilization of metals in roots and a reduction of metal transfer to shoots. These results suggest a key role of these bacteria in plant growth, nutrition, and adaptation to the ultramafic constraints.

STRUKTUR DAN FISIOGNOMI VEGETASI MANGROVE DI REMPANG CATE KOTA BATAM

SIMBIOSA ◽  
2014 ◽  
Vol 3 (1) ◽  
Author(s):  
Yarsi Efendi ◽  
Dahrul Aman Harahap
Keyword(s):  
Data Collection ◽  
Coastal Area ◽  
Growth Zone ◽  
Mangrove Area ◽  
Rhizophora Apiculata ◽  
The Difference ◽  
Mangrove Zonation ◽  
Vertical Transect ◽  
Zone Growth ◽  
Vegetation Physiognomy

Structure and physiognomy of mangrove strongly influenced by the zonation that occurred in the area of mangroves growth. The differences of zona growth will effect  to differences in the structure and composition of vegetation. There are three zones in the mangrove area, which is caused by the difference of flooding which also resulted in the difference to the salinity. The differences of growth zone will performed to the type vegetation performance (Physiognomy). This study is aims to prove the mangrove’s physiognomy that taken in the coastal area of Rempang Cate  Batam, on March 2014 to June 2014. This study was a survey with data collection using a vertical transect plots 100 m. Based on the research that has been done obtained difference vegetation physiognomy stands for every level of growth in each zone growth. Proximally found 13 species of mangroves in 8 families. The results of the analysis of the vegetation on the trees growth level are, Ceriops decandra have the greatest significance important value 167.55% on sapling (juvenille ) level is dominated by Rhizophora apiculata 120%, and seedling growth level dominated by Rhizophora apiculata  186.80%. Keywords: Structure and physiognomy, mangrove zonation

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