Home > VIII International Symposium on Pear > EFFECTS OF HORMONAL CONDITIONING OF PEAR LEAF EXPLANTS ON AGROBACTERIUM-MEDIATED TRANSFORMATION EFFICIENCY

Articles

EFFECTS OF HORMONAL CONDITIONING OF PEAR LEAF EXPLANTS ON AGROBACTERIUM-MEDIATED TRANSFORMATION EFFICIENCY

Article number

596_71

Pages

441 – 445

Language

English

Abstract

The effects of a 2,4-D pre-inoculation pulse on transformation efficiency of Bartlett and Abbé Fétel leaf explants were evaluated in order to develop a preliminary protocol for Agrobacterium-mediated transformation of pear.
The hormone conditioning treatment increased transformation efficiency, measured both as frequency of leaves with GUS activity and mean of GUS expressing foci/leaf based on late GUS histochemical assay results (recorded on day 35 and 135 after inoculation), and in contrast with earlier collected data (within day 20), the hormone conditioning treatment increased transformation efficiency, measured as both frequency of leaves with GUS activity and mean of GUS expressing foci/leaf.

Publication

VIII International Symposium on Pear

Authors

P. Negri, L. Cantoni, L. Manzecchi

Keywords

Pyrus communis, auxin, Agrobacterium tumefaciens, genetic transformation

Full text

https://doi.org/10.17660/ActaHortic.2002.596.71

Online Articles (158)

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A. Itai | K. Yoshida | K. Tanabe | F. Tamura

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L. Monte-Corvo | L. Goulão | C. Oliveira

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E. Caboni | P. Lauri | B. Watillon

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L. Dondini | S. Tartarini | E. Nocelli | S. Sansavini

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L. Dondini | S. Tartarini | S. Sansavini | S. Malaguti | C. Bazzi

32. BREEDING FOR NEW TRAITS IN PEAR

E. Bellini | S. Nin

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D.R. Gautam | N. Sharma

37. ACHIEVEMENTS OF PEAR BREEDING IN KOREA

L.S. Shin | W.C. Kim | H.S. Hwang | Y.U. Shin

38. PEAR BREEDING AND CULTIVAR EVALUATION IN POLAND

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40. ACHIEVEMENTS AND PROSPECTIVES IN PEAR BREEDING AT THE FRUIT RESEARCH STATION VOINESTI, ROMANIA

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E. Bellini

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45. EVALUATION OF EUROPEAN PEAR (PYRUS COMMUNIS) FOR JAPAN’S FRESH MARKET

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62. VARIATION OF SOME ENZYMATIC ACTIVITIES IN RELATIONSHIP TO SCION/STOCK COMPATIBILITY IN PEAR/QUINCE COMBINATIONS

S. Musacchi | A. Masia | J. Fachinello

63. STUDY OF GENE EXPRESSION IN COMPATIBLE AND INCOMPATIBLE PEAR/PEAR AND PEAR/QUINCE GRAFTS BY MRNA DIFFERENTIAL DISPLAY

64. EFFECT OF BUDDING HEIGHT ON TREE SIZE AND PRECOCITY

E.A. Mielke | L. Smith

65. EVALUATION OF PEAR INTERSTEMS

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66. BEHAVIOUR OF FOUR OVER GRAFTED CHINESE PEAR VARIETIES (PYRUS SEROTINA) IN BUCURESTI AREA

F. Stanica

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69. MICROPROPAGATION OF PEAR THROUGH TEMPORARY IMMERSION

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70. VASCULAR TISSUE REGENERATION IN ”IN VITRO” GRAFTS OF PEAR/QUINCE

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71. COMPARISON OF DECONTAMINATING TREATMENTS ON AGROBACTERIUM-INOCULATED INTERNODE EXPLANTS OF ‘BARTLETT’ PEAR

P. Negri | L. Manzecchi

72. EFFECTS OF HORMONAL CONDITIONING OF PEAR LEAF EXPLANTS ON AGROBACTERIUM-MEDIATED TRANSFORMATION EFFICIENCY

P. Negri | L. Cantoni | L. Manzecchi

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G. De Paoli | E. Subirà | A. Battistini

78. INFLUENCE OF VARIOUS FACTORS ON ADVENTITIOUS SHOOT FORMATION FROM PEAR LEAF EXPLANTS

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79. STANDARD AND COMPACT PEAR CLONES IN VITRO SENSITIVITY TO CYTOKININS

E. Gatti | S. Predieri

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81. ELIMINATION OF APPLE CHLOROTIC LEAF SPOT VIRUS (ACLSV) FROM PEAR BY IN VITRO THERMOTHERAPY AND CHEMOTHERAPY

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83. ENVIRONMENT FRIENDLY PEST-CONTROL STRATEGIES IN PEAR: STATE OF THE ART AND PROSPECTS

E. Pasqualini

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T. Deckers

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P. VanBuskirk | R. Hilton | P. Westigard

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87. INDUCTION OF PATHOGEN RESISTANCE IN PEAR BY TRANSIENTLY ALTERING THE FLAVONOID METABOLISM WITH SPECIFIC ENZYME INHIBITORS

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S.M. Abol-Maatey | M.A. Medany | A.F. Abou-Hadid | N.Y. Abd El-Ghafar | I.S. Elewa

89. ELIMINATION OF VIRUSES FROM THE USDA PYRUS GERMPLASM COLLECTION

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90. THE EFFECT OF PROHEXADIONE-CA ON VEGETATIVE AND CROPPING PERFORMANCE AND FIRE BLIGHT CONTROL OF PEAR TREES

91. EPIDEMIOLOGICAL STUDIES OF FIRE BLIGHT (ERWINIA AMYLOVORA) IN SPAIN

I. Llorente | A. Badosa | P. Vilardell | E. Montesinos

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93. MICROSCOPIC STUDIES OF SCAB RESISTANCE SYMPTOMS (VENTURIA PIRINA) ON LEAVES OF PEAR CULTIVARS (PYRUS COMMUNIS)

94. ACQUIRED RESISTANCE OF STEMPHYLIUM VESICARIUM TO PROCYMIDONE ON PEAR IN ITALY

M. Collina | I. Gherardi | A. Brunelli

95. PATULIN AND OTHER METABOLITES PRODUCED BY FUNGI IN PEARS

L.A. Laidou | C.C. Thanassoulopoulos | M. Liakopoulou-Kyriakides

96. DETECTION OF PEAR DECLINE PHYTOPLASMA WITH SPECIAL REFERENCE TO THE PRODUCTION OF HEALTHY PLANT MATERIAL

C. Poggi Pollini | R. Bissani | A.R. Babini | M. Cardoni | V. Vicchi

97. NEW ENVIRONMENTALLY FRIENDLY PRPDUCTS AGAINST PSYLLA (PSYLLA PYRICOLA)

C.G. Tsipouridis | A.G. Manganaris | I. Kajati

98. FACTORS INFLUENCING THE CHANGES IN POPULATION STATE OF PEAR SUCKERS (CACOPSYLLA SP.) IN POLAND

K. Jaworska | R.W. Olszak | R.Z. Zajac

99. INSECTICIDE RESISTANCE IN THE PEAR PSYLLA

R. Buès | L. Boudinhon

100. VARIATION IN THE SUSCEPTIBILITY OF PEAR SEEDLINGS TO DAMAGE BY THE LARVAE OF THE SAWFLY (CALIROA CERASI)

L.R. Brewer | P.A. Alspach | A.G. White

101. THE DENSITY OF PEAR RUST MITE EPITRIMERUS PIRI (NALEPA) ON SOME PEAR CULTIVARS IN CENTRAL POLAND

T. Badowska-Czubik | D. Kruczynska | E. Pala

102. CONCENTRATED SPRAY APPLICATIONS IN PEAR TRELLISING

J.C. Magdalena | E. Sanchez | S. Bemher

103. ORGANIC PEAR PRODUCTION IN THE RIO NEGRO VALLEY OF ARGENTINA

L.I. Cichón | M.D. Raffo | E. Sànchez

104. EUROPEAN PEAR ORCHARD DESIGN AND HDP MANAGEMENT: A REVIEW

S. Sansavini | S. Musacchi

105. EFFECT OF TRAINING SYSTEM AND ROOTSTOCK ON GROWTH AND PRODUCTIVITY OF GOLDEN RUSSET® BOSC PEAR TREES

R.B. Elkins | T.M. DeJong

106. EFFECT OF SPACING AND ROOTSTOCK ON THE PERFORMANCE OF ‘COMICE’ PEAR IN NEW ZEALAND

J.W. Palmer

107. INFLUENCE OF THE PLANT AND PRUNING SYSTEM ON THE FINANCIAL RESULT OF ‘CONFERENCE’

J. Vercammen

108. EUROPEAN PEAR ARCHITECTURE AND FRUITING-BRANCH MANAGEMENT: OVERVIEW OF AN INRA RESEARCH PROGRAM

P.E. Lauri | E. Costes | A. Belouin

109. PEAR FRUITING-BRANCH MODELS RELATED TO YIELD CONTROL AND PRUNING

S. Sansavini

110. THE BI-COLOURED PEARS ‘ROSEMARIE’ AND ‘FLAMINGO’: CHARACTERISTICS, PRODUCTION PROBLEMS AND POSSIBLE SOLUTIONS

J.P. Human

111. EFFECTS OF TRUNK GIRDLING ON TREE GROWTH, FRUIT PRODUCTION, AND FIRE BLIGHT

C. Ingels

112. D’ANJOU AND BOSC FRUIT QUALITY AS AFFECTED BY ROOTSTOCK AND TRAINING SYSTEM

E.A. Mielke

113. BEHAVIOUR OF THREE PEAR CULTIVARS PROPAGATED IN VITRO AND SELF-ROOTED, ON TATURA TRELLIS CANOPY

F. Stanica | M. Dumitrascu | A. Peticila

114. NITROGEN NUTRITION IN PEAR ORCHARDS

E.E. Sánchez

115. WATER STRESS LIMITS FOR VEGETATIVE AND REPRODUCTIVE GROWTH OF BARLETT PEARS

J. Marsal | M. Mata | A. Arbonàs | J. Rufat | J. Girona

116. DETERMINATION OF LEAF STANDARDS FOR MINERAL DIAGNOSIS IN PEAR ORCHARDS IN THE PO VALLEY, ITALY

M. Toselli | F. Mazzanti | B. Marangoni | M. Tagliavini | D. Scudellari

117. USE OF UREA-SULFURIC ACID AND IRON CHELATE TO MITIGATE IRON CHLOROSIS IN PEAR

R.B. Elkins | R.D. Meyer | C.D. Adams

118. DIFFERENT RESPONSES INDUCED BY BICARBONATE AND IRON DEFICIENCY ON MICROSHOOTS OF QUINCE AND PEAR

R. Muleo | M. Fisichella | C. Iacona | R. Viti | F. Cinelli

119. EFFECTS OF ROOTSTOCK ON THE PHYSIOLOGICAL RESPONSE OF PEAR CULTIVAR ABBÉ FÉTEL TREES TO INCREASING LEVELS OF SALINITY OF THE IRRIGATION WATER

120. EFFECTS OF REGULATED DEFICIT IRRIGATION ON THE PERFORMANCE OF PEAR IN AN ITALIAN SUB-HUMID AREA

S. Aconelli | P. Mannini

121. INFLUENCE OF RELIEF AND EROSION CONTROL SYSTEMS ON EVAPOTRANSPIRATION IN PEAR TREES

M. Iancu

122. FACTORS INFLUENCING THE FLOWERING, FRUIT SET AND FRUIT GROWTH OF EUROPEAN PEARS

A.D. Webster

123. PEAR TREE SHOOT GROWTH PATTERNS IN RELATION TO CHEMICAL CONTROL OF VEGETATIVE GROWTH WITH PROHEXADIONE-CALCIUM (APOGEE^®)

D.C. Elfving | D. Sugar | D. Faubion

124. ETHEPHON, NAA, AND NAD AS CHEMICAL THINNERS OF PEAR FRUITLETS

C. Bonghi | M. Poja | A. Ramina

125. REDUCING SECONDARY FLOWERING IN BARTLETT PEAR TO REDUCE FIRE BLIGHT

S.M. Southwick | K. Glozer | J.T. Yeager | R. Moran

126. THE EFFECT OF BLOSSOM DESICCANTS ON CROP LOAD OF PACKHAM¿S TRIUMPH PEAR

S.A. Bound | L. Mitchell

127. IMPROVEMENT OF FRUIT SET ON YOUNG PEAR TREES CULTIVAR CONFERENCE WITH GIBBERELLINS

T. Deckers | H. Schoofs

128. LEAF ANATOMY AND PHOTOSYNTHESIS OF PEAR TREES WITH DIFFERENT GROWTH HABIT

A. Rotondi | S. Predieri

129. INFLUENCE OF LEAF AREA ON THE SUGAR AND ORGANIC ACIDS CONTENT IN PEAR (PYRUS COMMUNIS) FRUITS CULTIVAR WILLIAMS

M. Hudina | F. Štampar

130. CONTROLLING VIGOUR AND COLOUR DEVELOPMENT IN THE BI-COLOURED PEAR CULTIVAR ROSEMARIE

K.I. Theron | M. Le Grange | M. Smit | S. Reynolds | G. Jacobs

131. EFFECTS OF PROHEXADIONE-CALCIUM (APOGEE¿) ON BLOSSOMING, PRODUCTION, AND FRUIT QUALITY IN PEAR

D. Sugar | D.C. Elfving | E.A. Mielke

132. NECTAR COMPOSITION IN SOME PEAR CULTIVARS

A. Farkas | L. Gy. Szabó | Z.S. Orosz-Kovács

133. EFFECTS OF RETAIN™ ON FRUIT MATURITY AND FRUIT SET OF PEAR CULTIVARS WILLIAMS AND PACKHAM¿S TRIUMPH

M.C. Dussi | D. Sosa | G.S. Calvo

134. INSECT ATTRACTION OF FLOWERS IN PEAR CULTIVARS

A. Farkas | ZS. Orosz-Kovács | L. Gy. Szabó

135. EFFECT OF CROPLOAD IN PREVIOUS YEAR ON FRUIT SIZE OF PEAR CULTIVAR CLARA FRIJS

M. Bertelsen

136. GROWTH OF CLARA FRIJS PEAR IN A NORDIC CLIMATE

M. Bertelsen

137. CHEMICAL THINNING IN NASHI

S.A. Bound | Mitchell

138. A NEW POST-BLOOM THINNING AGENT FOR PACKHAM¿S TRIUMPH PEAR

S.A. Bound | L. Mitchell

139. EFFECT OF THE SYNTHETIC CYTOKININ CPPU ON FRUIT SIZE AND YIELD OF SPADONA PEAR

R.A. Stern | M.A. Flaishman | A. Shargal

140. THE QUALITY OF PEAR FRUIT

P. Eccher Zerbini

141. VOLATILE CONSTITUENTS OF ’HARROW‘ SWEET PEARS BY DYNAMIC HEADSPACE TECHNIQUE

F. Rapparini | S. Predieri

142. STUDIES ON SENSORY EVALUATION AND QUALITY OF PEAR FRUITS IN EMILIA-ROMAGNA

S. Predieri | D. Missere | E. Gatti

143. NON-DESTRUCTIVE DETERMINATION OF INTERNAL QUALITY IN INTACT PEARS BY NEAR INFRARED SPECTROSCOPY

G. Costa | M. Noferini | C. Andreotti

144. CHANGES IN CONFERENCE PEAR PEEL PIGMENTS DURING STORAGE AND RIPENING

J.M. Ben | J. Baszczyk

145. POSTHARVEST PHYSIOLOGY AND PATHOLOGY OF PEARS

D. Sugar

146. HARVEST MATURITY, MINERAL CONTENT AND POSTHARVEST QUALITY OF CONFERENCE PEARS STORED IN HIGH OR LOW CO₂

147. STUDY ON WATERCORE OCCURRENCE IN HOSUI JAPANESE PEAR

H. Gemma | S. Oomori | S. Sugaya | S-A. Peng | S. Iwahori

148. INFLUENCE OF CALCIUM AND OXYGEN LEVELS ON SOFT SCALD OF STORED ABBE FETEL PEARS

P. Bertolini | M. Guizzardi | C. Casadei

149. DOES BORON AFFECT THE OCCURRENCE OF PHYSIOLOGICAL DISORDERS OF CONFERENCE PEARS DURING CA-STORAGE?

H. Xuan | J. Streif | F. Bangereth

150. CHLOROPHYLL FLUORESCENCE AS A PREDICTIVE METHOD FOR DETECTION OF BROWNING DISORDERS IN CONFERENCE PEARS DURING CONTROLLED ATMOSPHERE STORAGE

A.A. Saquet | J. Streif

151. COMPOSITION OF HEXANE EXTRACTS FROM CONFERENCE PEAR PEEL

R. Lo Scalzo | P. Eccher Zerbini | M. Grassi

152. CHANGES IN STARCH CONTENT IN LA FRANCE PEARS DURING STORAGE

H. Murayama | S. Ikai | T. Fukushima

153. INFLUENCE OF HARVEST DATE AND STORAGE ON H₂O₂ AND SCAVENGER SYSTEMS IN ‘PASSE CRASSANE’ PEARS

A.M. Spinardi | C. Visai | N. Negrini | M. Coccuci

154. CONTROL OF SUPERFICIAL SCALD IN BEURRÉ D’ANJOU PEARS WITH LOW OXYGEN LEVELS

G. Calvo | M.E. Salvador | E. Sanchez

155. COMBINATION OF PSEUDOMONAS FLUORESCENS EPS288 AND REDUCED FUNGICIDE DOSE FOR CONTROL OF PENICILLIUM ROT DURING POSTHARVEST STORAGE OF PEAR

J. Francés | A. Bonaterra | E. Badosa | E. Montesinos

156. FUNGI THAT CAUSE POSTHARVEST DISEASES IN PEARS

I.A. Laidou | C.C. Thanassoulopoulos

157. EFFECT OF SHORT-TERM EXPOSURE TO HIGH CO₂ IN COMBINATION WITH BIOLOGICAL CONTROL ON POSTHARVEST DECAY OF PEARS, AND FACTORS AFFECTING SENSITIVITY OF PEARS TO CO₂ INJURY

D. Sugar | J.M. Benbow

158. STORAGE OF CONFERENCE PEAR IN LOW ETHYLENE ATMOSPHERE

A. Testoni | F. Lovati | M. Grassi | R. Lo Scalzo