+ Translate
+ Most Popular
Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Effect of ice nucleation-active bacteria on the physiology and ultrastructure of apricot floral organs

Effect of ice nucleation-active bacteria on the physiology and ultrastructure of apricot floral organs

Journal of Horticultural Science and Biotechnology 82(4): 563-570

ISSN/ISBN: 1462-0316

DOI: 10.1080/14620316.2007.11512274

The effects of the ice nucleation-active (INA) bacterium Pseudomonas syringae were studied on the physiological response and ultrastructure of the floral organs of 'Longwangmao' apricot (Prunus armeniaca Linn.). Inoculation with INA bacteria increased the super-cooling point (SCP) of petals, stamens, and pistils by 2.1 degrees C, 1.6 degrees C, and 1.4 degrees C respectively. INA bacteria also enhanced the relative electrolyte leakage (REL) of membranes in the floral organs, indicating that INA bacteria increased the permeability of membranes. INA bacteria enabled apricot floral organs to maintain relatively lower superoxide dismutase (SOD) and peroxidase (POD) activities, and led to an accumulation of malonyldialdehyde (MDA) under cold stress. The ultrastructures of pollen walls, organelles in the pollen cell, ovules and egg cells in control flowers which were subjected to -3 degrees C changed slightly, compared with the structures at 18 degrees C. However, under cold stress at -3 degrees C, inoculation with INA bacteria resulted in disintegrated floral organs, such as a disrupted and extruded pollen exine, and even destroyed organelles in pollen cells. Plasmolysis and the formation of small vesicles and cavities in nucellar cells occurred in INA bacteria-inoculated ovules. INA bacteria also induced swelling and the eventual disappearance of the nuclear envelope of the egg cell in the ovule. These results, the decreased activities of protective enzymes, the increased SCP, REL, and MDA contents, and the disintegrated ultrastructures of floral organs inoculated with INA bacteria under cold stress, suggest that INA bacteria decreased the tolerance of floral organs to frost and aggravated the level of damage.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 066204878

Download citation: RISBibTeXText

Related references

Effect of Ice Nucleation Active bacteria on the ultrastructure of the pollen of an apricot variety. Acta Horticulturae Sinica 28(5): 453-456, 2001

Effect of ice nucleation active bacteria on the ultrastructure of apricot varieties ovule. Acta Horticulturae Sinica 31(1): 21-24, 2004

The effect of ice nucleation active bacteria on cold resistance of apricot flower organs. Acta Horticulturae Sinica 29(1): 20-24, 2002

Species of ice nucleation active bacteria on the apricot and the relationship between their activity and flower frost. Scientia Agricultura Sinica 33(6): 50-58, 2000

Advances in research on ice nucleation active bacteria and frost injury of apricot in blooming period. Journal of Fruit Science 22(3): 265-270, 2005

Lack of correlation of in vitro antibiosis with antagonism of ice nucleation active bacteria on leaf surfaces by non ice nucleation active bacteria. Phytopathology 78(4): 444-450, 1988

Surface properties and size of the ice nucleation site in ice nucleation active bacteria theoretical considerations. Cryobiology 27(1): 80-84, 1990

Ice nucleation, freezing injury, and colonization of 'Totem' strawberry flowers with ice-nucleation-active (INA) bacteria. Journal of the American Society for Horticultural Science 123(2): 234-238, 1998

Temperature and pH-mediated changes in ice nucleation activity of ice nucleation-active bacteria. Korean Journal of Plant Pathology 6(1): 99-105, 1990

The nature of ice nucleation active bacteria associated with apple and peach trees in georgia usa and influence of various chemicals on their ice nucleation activity. Phytopathology 77(4): 643, 1987

Ice nucleation temperature of individual leaves in relation to population sizes of ice nucleation active bacteria and frost injury. Plant Physiology 77(2): 259-265, 1985

A study on the direct effect of short duration high temperature on changes to the ultrastructure of floral organs and flag leaf in wheat. Journal of China Agricultural University 2(1): 7-12, 1997

The effects of ice nucleation active bacteria on temperatures of ice nucleation and freeze injury of prunus flower buds at various stages of development. Journal of the American Society for Horticultural Science 109(3): 375-380, 1984

Ice nucleation properties of mineral dust particles; determination of onset RHi , IN active fraction, nucleation time-lag, and the effect of active sites on contact angles. Atmospheric Chemistry and Physics 10.1: 95-105, 2010

Patterns of ice nucleation and lethal injury in floral organs of overwintered cauliflower. Cryobiology 25(6): 0-535, 1988