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Phosphate Solubilizing Bacteria: Their Isolation, Characterization and Impact on Plant Growth

Thesis Info

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Author

Munir, Iqra

Program

PhD

Institute

University of the Punjab

City

Lahore

Province

Punjab

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Subject

Botany

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/10232/1/Iqra%20Munir_Microbio%20%26%20Mol%20Genetics_2019_UoPunjab_PRR.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726886247

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Three phosphate solubilizing bacteria were isolated and identified by 16S rRNA sequencing as Pseudomonas putida, Pseudomonas sp and Pseudomonas fulva. The strains were subjected to plant biochemical testing and all the PGPR attributes were checked in the presence of pesticides (chlorpyrifos and pyriproxyfen). The phosphate solubilizing index of strain Ros2 was highest in NBRIP medium i.e 2.23 mm. All the strains showed acidic pH (ranges from 2.5-5) on both medium i.e PVK and NBRIP. Strain Ros2 was highly positive for ammonia production as well as siderophore production while strain Rad2 was positive for HCN production. The results obtained by the strains Rad1, Rad2 and Ros2 for auxin production were 33.1, 30.67 and 15.38 μg ml-1, respectively. Strain Rad1 showed 16% increase in percentage germination in comparison to control in the presence of pesticide stress. Most promising results for chlorophyll content estimation were obtained in the presence of carotenoids upto 6 mgg-1 without stress by both strains Rad1 and Rad2. Study suggests that especially strain Ros2 can enhance plant growth parameters in the pesticide stress.
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مولانا حیدر زمان صدیقی

مولانا حیدر زمان صدیقی
اسی مہینہ میں پاکستان کے ایک خط سے یہ افسوس ناک اطلاع ملی کہ جنوری کے آخری عشرہ میں مولانا حیدر زمان صدیقی نے وفات پائی، مرحوم سے صرف علمی مراسلت رہتی تھی، اس لئے ان کے ذاتی حالات کم معلوم ہیں، ایک زمانہ میں اُن کا قیام پٹھان کوٹ میں تھا، مگر ہندوستان کی تقسیم کے بعد سے ہری پور ضلع ہزارہ میں منتقل ہوگئے تھے، مرحوم بڑی صلاحیتوں کے مالک تھے، اور اپنی علمی وتصنیفی زندگی کے ابتدائی ہی دور میں ایک خاص حلقہ میں اچھی خاصی شہرت حاصل کرلی تھی، اسلامی تعلیمات کی روشنی میں جدید دور کے سیاسی و معاشی مشکلات کا حل اُن کا خاص موضوع تھا، اس موضوع پر وہ معارف اور دوسرے رسالوں میں برابر مضامین لکھتے رہتے تھے، اور اسلامی مسائل کے جدید مفسرین کے برخلاف ان کا قلم بڑی حد تک محتاط واقع ہوا تھا، متفرق مضامین کے علاوہ مستقل تصانیف میں غالباً صرف ایک کتاب اسلام کا نظریہ سیاست اس کی قلمی یادگار ہے، مرحوم کی ذات سے بڑی توقعات وابستہ تھیں، لیکن افسوس موت نے ان کو پوری ہونے کا موقع نہیں دیا، اﷲ تعالیٰ اس خادم دین کو اپنی مغفرت سے نوازے۔
(شاہ معین الدین ندوی، فروری ۱۹۵۲ء)

 

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