Class (24) =Auxin | Introduction, Function & Application of Auxin | Types of Plant Hormone (Part 1)

Download "Solution Pharmacy" Mobile App to Get All Uploaded Notes, Model Question Papers, Answer Papers, Online Test and other GPAT Materials - play.google.co...
Plant hormones, also known as phytohormones, are chemicals that regulate plant cell processes. They are signal molecules produced within the plant functioning in extremely low concentrations
Five major types of plant hormones
1. Auxin
2. Gibberellin
3. Cytokinin
4. Ethylene
5. Abscisic acid
Plant growth regulators usually are defined as organic compounds, other than nutrients, that in small concentrations, affect the physiological processes of plants”. In practical purpose, they are defined as either natural or synthetic compounds that are applied directly to plant to alter its life processes/structure in some beneficial way so as to enhance yield, improve quality and facilitate harvesting. When herbicides are applied to induce a specific beneficial change, then they are considered as plant growth regulators. If the compound is produced within the plant it is called a plant hormone. The term "hormone" is derived from a Greek word meaning “to arouse or stimulate or enhance an activity
1. Auxins
Auxin is the first plant hormone/growth substance discovered. The term comes from the Greek word, auxein means "to grow". Compounds are generally considered as auxins if they are synthesized by the plant and have similar activity to Indole-3- acetic acid (IAA).
Discovery of Auxins
Charles Darwin was the first scientist who performed early auxin experiments on canary grass (Phalaris canariensis) coleoptiles. He observed the effects of a hypothetical substance modulating plant shoot elongation to allow tropic growth toward light. IAA is the major auxin involved in many of the physiological processes in plants
Functions of Auxin
The following are some of the responses that auxin is known to cause
1. Stimulates cell loosening, expansion and elongation.
2. Initiation of adventitious roots on stem cuttings
3. Lateral root development in tissue culture
4. Stimulates differentiation of phloem and xylem
5. Stimulation of abscission (young fruits) or delay of abscission
6. Stimulates cell division in tissue culture in combination with cytokinins
7. Mediates the tropistic response of bending in response to gravity and light
2. Gibberellins
Gibberellins are synthesized in young tissues of the shoots, uncertainly in roots and also in the developing seeds. There are also some evidences that leaves may be the source of some biosynthesis
3. Cytokinins
In Cytokinin, cyto = cell + kinin = division, i.e. meaning is cell division. Cytokinin is also called as cytokine. These are the compounds resembling with adenine (aminopurine) which stimulates cell division.
4. Ethylene
Ethylene has simplest structure among all the plant hormones. It is a gaseous compound that has effects like an abscisic
5. Abscisic Acid
Abscisic acid (ABA) controls several physiological processes in plants and best known for regulatory role in abiotic stresses like drought and high salinity. It promotes stomatal closing by which plants enable to adapt to water stress (desiccation tolerance). It also controls seed germination, vegetative growth and bud dormancy
Get in touch with the solution by just clicking following links-
Facebook Group- / solutionpharamcy
Facebook Page- / pharmavideo
New channel (Pharmacy Dictionary) - / @pharmacydictionary
Instagram- / solutionpharmacy
E-Mail for official and other work - [e-mail]
LinkedIn- / pushpendrakpatel
#solutionpharmacy #Pharmacologyclass #GPATonlinetest

[@Cartoon_moralstory11]

Thanks ma'am ❤

[@rikeshnetam4843]

Excellent mam you are study❤❤❤

[@techstranger6608]

You are great mam... God bless you... Nice explanation mam, I really like it. 👌👌👍🙏

[@MunzzaQuarnee]

Zbrdast mam🎉❤

[@studentofbiotechanology]

kya mas padhati hai mam achha se samjh me aa rha hai hame ab lagta hai exam likh kar achha se aa jaunga me

[@vaibhavipawar9228]

Teaching method is so easy way.

[@asharatnani8892]

Your Content delivering is Absolutely fantastic ...great job

[@Ash78677]

😂gggggffffff banegi k

[@shirishthakare9842]

Mam u hav good knowledge. Demands r for usages. प्लांट का भी जनरल नॉलेज दो. ताकी आम आदमी इसका उपयोग कर पाए. डोज़ बता सकते हो. पावर पॉइंट प्रेजेंटेशन हो सकता है. लोग गलत इस्तेमाल करते है. इफेक्टिव तरीके बताये. Make small booklet and sell.

[@Cartoon_moralstory11]

Great explanation ❤😊

[@amitsinghtomar11]

Tq mam very helpful video

[@nidhiyadav3569]

Nice video mam.. you are doing grt job.. i have done mpharma in pharmacognosy but now i am a house wife from last 7 years by watching your videos I am revelling all these topics thank you so much...

[@solutionpharmacy]

Thank you

[@rupeshkumarshortss]

@@solutionpharmacy great mam

[@Rahul_Mahour_14]

Thanx Ma'am...😊

[@rupeshkumarshortss]

Great sis. Lots of love 💞

[@durgeshsingh6447]

Thanks 😊 mam

[@universal6704]

Ma'am kindly tell me which device is the plant sensation measured

[@aaquib608]

Very helpful :) Please upload next hormone video soon

[@dilawarhussain2545]

Thanks Ma'am

[@tarunkumargoyal7532]

Very informative ma'am.

[@napinderkotli]

Thanks mam but Very beautiful

[@tamanna8834]

Very nice video mam

[@manishakhadka5032]

thank you mam this vedio is tooo help me

[@TheHope045]

Thank you mam

[@ankurpatel1127]

Thanks a lot mam Mam this is toooooo important for .me Thanks mam

[@unknownagriculture2918]

Thanks a lot .......mam

[@Islamicvedio871]

Best👍♥

[@drxdrx8159]

Very helpful thankyou mam make next video on harmone quick

[@rahulchoudhari9968]

Can we use NAA for mango plant??

[@bamangmeku6316]

Yes, to heal the cut ends and to overcome from Mango Malformation in alphanso.

[@abhisekray3207]

IBA{indole butyric acid } is natural auxins mam

[@avradipghosh799]

No, IBA (indole butyric acid) is synthetic or artificial auxin.

[@kapildeoyadav4507]

indole acetic acid

[@jitindhingra8139]

Thanku mam

[@nafsinrede9916]

❤❤

[@riyashahu4880]

Mam plz natural excipient aur herd disruption and morphology of organised and unorganised herbs iss per video upload kro na plzzzzzzzzzz🙏🙏🙏🙏🙏🙏

[@amaanuddin1820]

Mam ya D pharma 1st year Ka liya Sahi hai for pharmacognosy

[@aakritipatel4267]

Herbal drug technology ka lecture plzz provide krwaye 🙏🙏🙏

[@SumitDas-oe6mh]

Make more video of other semester 3 4 5 6 and how tp study for gpat mam

[@krishan9766]

Madem phytoplasm ke bare bi btao

[@khizikhokhar6107]

auxin prevents abscission ,,I think

[@9649968517]

IBA is a natural auxin

[@darshanhemani583]

Indole Butyric Acid is the natural Auxin not synthetic

[@priyankasaxena8319]

🙏🙏🙏🙏👏

[@lidiyanipnal5521]

IBA is natural hormone

[@rajanderkumar4689]

Ma'am please don't provide wrong information. IBA is natural auxin

[@solutionpharmacy]

This reply is from solution editor- Please give us your reference with complete detail. We will try to correct if somthing is wrong by our side

[@rajanderkumar4689]

Solution- Pharmacy In class 11 ncert chapter 15 plant growth and development under the heading of auxin IAA and IBA are given as natural auxins isolated from plants. Thankyou

[@solutionpharmacy]

@@rajanderkumar4689 Yes you r right.We have taken reference of c.k. kokate "text book of pharmacognosy " fiftieth edition. Long ago It was considered as synthetic auxin but now it comes under the category of natural hormone

[@kdyadav3101]

Polyploidy ki class ka notifications send kr dena mam

[@ashamahto2175]

Thank you ma'am...

[@zarabatool9293]

Very nice mam 👍

[@MANISHKUMAR-rz5fv]

Thanku mam