Journal of Applied Microbiology

Cover image for Vol. 123 Issue 6

Edited By: A. Gilmour

Impact Factor: 2.099

ISI Journal Citation Reports © Ranking: 2016: 80/125 (Microbiology); 81/160 (Biotechnology & Applied Microbiology)

Online ISSN: 1365-2672

Associated Title(s): Letters in Applied Microbiology

Virtual Issue on Plant Resistance

Plant Resistance Virtual Issue

Plants live in complex environments filled with potential microbial friends and foes. To counter disease, plants have evolved both pre-formed and induced defence mechanisms that serve to eliminate or restrict the growth of potential pathogens and pests. It is now appreciated that these systems for protection can be influenced by apparently benign bacteria and fungi that colonise root or leaf surfaces or that can live inter- and intra-cellularly as endophytes within plant tissue. These organisms may also function in promotion of plant growth. In light of optimizing plant health, it is prudent to understand the potential that such microbes brings to the field of agriculture and to determine the underlying mechanisms of action, which are undoubtedly diverse. The recent papers in this virtual issue help highlight the importance of these interactions and efforts to increase our understanding of the mechanisms involved. Using data from both the laboratory- and field-based experiments, the potential of harnessing bacteria and fungi for promoting plant health in the broadest context is showcased and serves as a platform for extending knowledge in the particular field of biological control of plant diseases.

Max Dow and Rob Zdor
Editors, Journal of Applied Microbiology


Mechanisms: specific plant defenses elicited by microbes:

Rhizobacterially induced protection of watermelon against Didymella bryoniae
N.T.T. Nga, N.T. Giau, N.T. Long, M. Lübeck, N.P. Shetty, E. De Neergaard, T.T.T. Thuy, P.V. Kim and H.J.L. Jørgensen
Endophytic colonization by Pseudomonas aeruginosa induces plant peroxidase activity/H2O2 production and protects against fungal disease in the field.

Evaluation of Ochrobactrum anthropi TRS-2 and its talc based formulation for enhancement of growth of tea plants and management of brown root rot disease
U. Chakraborty, B.N. Chakraborty, M. Basnet and A.P. Chakraborty
Soil-applied O. anthropi reduces fungal disease in the greenhouse and induces a number of plant defense enzymes.

Effect of Azospirillum-mediated plant growth promotion on the development of bacterial diseases on fresh-market and cherry tomato
A.M. Romero, O.S. Correa, S. Moccia and J.G. Rivas
Seed inoculation protects against foliar bacterial diseases under greenhouse conditions. Distal effects noted but plant defenses were not studied.

Calcium- and ROS-mediated defence responses in BY2 tobacco cells by nonpathogenic Streptomyces sp
J M. Baz, D. Tran, M. Kettani-Halabi, S.E. Samri, A. Jamjari, B. Biligui, P. Meimoun, H. El-Maarouf-Bouteau, M. Garmier, P. Saindrenan, M.M. Ennaji, M. Barakate and F. Bouteau
Nonpathogenic Streptomyces strain protects potatoes against soft rot and induces plant defense responses.

Consortia: The use of multiple microbes in systemic resistance:

Microbial consortium–mediated reprogramming of defence network in pea to enhance tolerance against Sclerotinia sclerotiorum
A. Jain, S. Singh, B. Kumar Sarma and H. Bahadur Singh
A triple microbe inoculation performed better single microbes in protecting peas against fungal disease in greenhouse testing and resulted in elevated levels of plant defense enzymes.

Application of inorganic carrier-based formulations of fluorescent pseudomonads and Piriformospora indica on tomato plants and evaluation of their efficacy
M.V.R.K. Sarma, V. Kumar, K. Saharan, R. Srivastava, A.K. Sharma, A. Prakash, V. Sahai and V.S. Bisaria
Microbes, shown previously to induce systemic resistance, are shown to be compatible in a multi-strain formulation in reducing fungal disease and promoting tomato growth.

Action against insect pests:

Controlling Myzus persicae with recombinant endophytic fungi Chaetomium globosum expressing Pinellia ternata agglutinin: using recombinant endophytic fungi to control aphids.
G. Qi, N. Lan, X. Ma, Z. Yu, and X. Zhao.
Engineering endophytes to control insect pests.

Effects on plant growth, development and heavy metal resistance:

Delay of flower senescence by bacterial endophytes expressing ACC deaminase.
S. Ali, T.C. Charles and B.R. Glick.
The use of Pseudomonas endophytes with ACC deaminase activity has the potential to replace the chemicals that are currently used by the cut flower industry to prolong shelf life.

Isolation and functional characterization of bacterial endophytes from Carica papaya fruits.
P. Krishnan, R. Bhat, A. Kush and P. Ravikumar
A bacterial endophyte from papaya fruit is capable of improving the antioxidant potential of raw papaya after fermentation.

Culturable bacteria from Zn- and Cd-accumulating Salix caprea with differential effects on plant growth and heavy metal availability.
M. Kuffner, S. De Maria, M. Puschenreiter, K. Fallmann, G. Wieshammer, M. Gorfer, J. Strauss, A.R. Rivelli, and A. Sessitsch.
Actinobacteria have the potential to increase metal uptake and may be applicable in phytoremediation of contaminated soils.

Methylobacterium sp. resides in unculturable state in potato tissues in vitro and becomes culturable after induction by Pseudomonas fluorescens IMGB163.
O. Podolich, V. Laschevskyy, L. Ovcharenko, N. Kozyrovska, and A.M. Pirttilä.
This is the first report on increase of the culturability of potentially beneficial endophytes in response to inoculation by nonpathogenic bacteria.

Effect of applying an arsenic-resistant and plant growth-promoting rhizobacterium to enhance soil arsenic phytoremediation by Populus deltoides LH05-17.
Q. Wang, D. Xiong, P. Zhao, X. Yu, B. Tu, and G. Wang.
Agrobacterium radiobacter enhances phytoremediation of arsenic by poplar.