WELCOME TO ALL

1
WELCOMETO ALL
Prof. M. Ashrafuzzaman Dept. Plant Pathology, BAU
2
History of Plant Pathology

• Four Phases

1. Ancient period
2. Dark period
3. Renaissance period
4. Modern period

3
Ancient Period

• Theophrastus (300-286 B.C.)
• Study and write about the diseases of trees,
  cereals and legumes in his book enquiry into
  plants
• His approach was observational and speculative
  rather than experimental.
• Theory of spontaneous generation

Father of botany
4
DARK PERIOD

• 300AD and 1300AD
• Also called pre-renaissance period in history
• no increase in the knowledge of plant pathology

5
PRE-MODERN/ RENAISSANCE PERIOD/AUTOGENIC ERA
(17th mid 19th)

• 1675 A. D.-Anton van Leeuwenhoek (Holland)
• Invented compound microscope in 1675
• In 1683 he described bacteria seen with this
  microscope

6

• 1729 A. D.-Pier Antonio Micheli (Italian)
• Observed fungal spores for the first time and
  conducted many spore germination studies in 1729
• He published a book Nova Plantarum Genera in
  which he gave descriptions about 1900 species in
  Latin out of which 900 were fungi.

Father of Mycology.
7
3) 1755 A. D.-Tillet (French)

• Published a paper on bunt or stinking smut of
  wheat
• He reported the chemical treatment of seeds

8
MODERN PERIOD/ GOLDEN ERA/PATHOGENIC ERA (1800
1900)

• IRIS FAMINE
• In 1845, the potato crop in Ireland was
  completely wiped out by late blight disease
• caused great famine in 1846.
• This resulted in the death of hundreds of
  thousands of people
• immigration of more than one and a half million
  Irish to United States.

9

• 4) 1853 A. D.-Anton De Bary (Germany)
• established that fungi are the causes, not result
  of plant diseases
• renamed the casual organism of late blight as
  Phytophthora infestans.
• He discovered heteroecious nature of rust fungi
• Detailed life cycles of downy mildew
• He wrote a book named Morphology and Physiology
  of fungi, lichens and Myxomycetes (1866).

• father modern Mycology

10

• 8) 1879 A. D.- Robert Koch
• Established the germ theory

• Germ theory
• diseases are caused by the presence and actions
  of specific micro-organisms
• that microorganisms are the cause of many
  diseases.

11

• 8) 1889 A. D. Beijerinck (Dutch)
• proved that the virus is not a living
  microorganism.
• N.A. Cobb
• Contributed a lot to nematode morphology,
  taxonomy and methodology

• Founder of virology

• Founder of nematology

12
Paul Neergaard

• Father of seed pathology

13
Bengal Famine 1943
Brown spot diseases
14
Bangladesh perspective

• Department of plant pathology
• Seed Pathology Centre
• Plant Disease diagnostic Clinic

15

• Today Plant Pathology
• Some major trends were in the following areas
• Physiological plant pathology
• Genetics of the host and the pathogens
• Environment and its relation to plant disease
• Nature of disease resistance in plants
• Biochemistry and physiology of the diseased
  plants
• Tissue culture in plant pathology
• Ecological study of plant pathogens
• Integrated plant disease management
• Biotechnology and genetic engineering

16
THANKS TO ALL