Hyphal Tip Growth: Outstanding Questions

نویسنده

  • Salomón Bartnicki-García
چکیده

A. THE CENTRAL QUESTION POLARIZED SECRETION.....................................................................................2 B. THE SPITZENKÖRPER .................................................................................................................................3 1. Organizer of vesicle traffic ..................................................................................................................3 2. The Spitzenkörper as a Vesicle supply Center (VSC) .............................................................................4 3. Spitzenkörper Trajectory ......................................................................................................................6 4. Growth Pulses and Satellite Spitzenkörper............................................................................................6 5. Spitzenkörper origin.............................................................................................................................7 6. Questions .............................................................................................................................................7 C. THE CYTOSKELETON .................................................................................................................................8 1. Actin Cytoskeleton................................................................................................................................8 2. Microtubular cytoskeleton ....................................................................................................................9 3. Questions .............................................................................................................................................9 D. TURGOR .................................................................................................................................................. 10 1. Evolutionary and Ecological Significance........................................................................................... 10 2. Role of Turgor in Hyphal Growth and Morphogenesis ........................................................................ 11 3. Question............................................................................................................................................. 12 III. MODELS OF HYPHAL TIP GROWTH 13

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Role of Microtubules in Rapid Hyphal Tip Growth of Aspergillus nidulans□V

The filamentous fungus Aspergillus nidulans grows by polarized extension of hyphal tips. The actin cytoskeleton is essential for polarized growth, but the role of microtubules has been controversial. To define the role of microtubules in tip growth, we used time-lapse microscopy to measure tip growth rates in germlings of A. nidulans and in multinucleate hyphal tip cells, and we used a green fl...

متن کامل

The role of microtubules in rapid hyphal tip growth of Aspergillus nidulans.

The filamentous fungus Aspergillus nidulans grows by polarized extension of hyphal tips. The actin cytoskeleton is essential for polarized growth, but the role of microtubules has been controversial. To define the role of microtubules in tip growth, we used time-lapse microscopy to measure tip growth rates in germlings of A. nidulans and in multinucleate hyphal tip cells, and we used a green fl...

متن کامل

Hyphal tip growth and nuclear migration.

Recent molecular and cytological studies have greatly advanced our understanding of hyphal tip growth and nuclear migration in filamentous fungi. Mutants involved in various aspects of hyphal tip growth have been isolated. Genes involved in nuclear migration continue to be identified, including putative regulators. The role of microtubules and microtubule motor proteins in hyphal tip growth has...

متن کامل

The tip growth apparatus of Aspergillus nidulans.

Hyphal tip growth in fungi is important because of the economic and medical importance of fungi, and because it may be a useful model for polarized growth in other organisms. We have investigated the central questions of the roles of cytoskeletal elements and of the precise sites of exocytosis and endocytosis at the growing hyphal tip by using the model fungus Aspergillus nidulans. Time-lapse i...

متن کامل

A Ras-like GTPase is involved in hyphal growth guidance in the filamentous fungus Ashbya gossypii.

Characteristic features of morphogenesis in filamentous fungi are sustained polar growth at tips of hyphae and frequent initiation of novel growth sites (branches) along the extending hyphae. We have begun to study regulation of this process on the molecular level by using the model fungus Ashbya gossypii. We found that the A. gossypii Ras-like GTPase Rsr1p/Bud1p localizes to the tip region and...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2002