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Ignace Lab
เข้าร่วมเมื่อ 9 ก.ค. 2019
Module 9: The wrap up
In the final module of the semester, we discuss the state of climate change, especially temperature anomalies. Changes in phenology can be linked to temperature anomalies, with big implications for ecosystem health. Plant response to climate change can vary between phenotypic plasticity, acclimation and adaptation, but can plants keep up with accelerating climate change? We end by discussing how plant physiologists must move forward with new experiments and method. Video module features animations from NASA
มุมมอง: 90
วีดีโอ
Video module 8: Biotic Interactions Part II
มุมมอง 4774 ปีที่แล้ว
In Part II of Biotic Interactions, we cover the induced plant defensive strategies when interacting with harmful organisms. We start with cellular responses with defensive compounds. We move on to hypersensitive responses at the local site of infections. Finally, we discuss the basic steps of how plants develop systemic acquired resistance.
Module 7: Biotic interactions Part I
มุมมอง 2844 ปีที่แล้ว
Plants have a diverse suite of defensive strategies to cope with harmful interactions with other organisms. In this module, we go over the defensive strategies that are always present, which include mechanical barriers and secondary metabolites. However, there are some pathogens and bacteria that have “out smarted” these strategies.
Video Module 6 Symbiotic relationships
มุมมอง 1614 ปีที่แล้ว
Plants form symbiotic relationships with bacteria and fungi. We learn about the types of plants that form these relationships and the general steps involved in root nodule formation and mycorrhizae associations.
Module 5: Essential Elements
มุมมอง 2814 ปีที่แล้ว
In this brief intro to nutrient uptake, we talk about the fundamentals of essential elements and how nutrient levels affect patterns of plant growth (biomass allocation). In the end, we make draw relationships between growth, age, and leaf gas exchange patterns with different nitrogen levels.
Module 4: C3 versus C4 plants
มุมมอง 5104 ปีที่แล้ว
We start by explaining how plants that use the C4 photosynthetic pathway are able to overcome the photorespiration issue found in plants that use the C3 photosynthetic pathway. We finish by comparing CO2 response curves in C3 versus C4 plants.
Module 3: Rubisco
มุมมอง 5K4 ปีที่แล้ว
Rubisco is a fascinating enzyme, packed with many active sites and can act like a carboxylase (fix CO2) or oxygenase (fix O2). As cool as that is, it can lead to an inefficient process known as photorespiration. Learn how the environment affects when rubisco will influence higher or lower photorespiration.
Module 2: CO2 Response Curves
มุมมอง 2.5K4 ปีที่แล้ว
Hear how plant physiologists use the LI-COR 6400XT to measure photosynthetic capacity. We cover how biochemical limitations prevent plants from continuously increasing photosynthesis in response to increasing CO2 levels.
Module 1: The Carbon Reactions
มุมมอง 6324 ปีที่แล้ว
In this basic overview, you will learn about the major inputs and outputs at each phase of the Calvin Cycle. Only key takeaways here (learning a bunch of reactions was not on the priority list). Ultimately, we answer the question: How do molecules of CO2 get processed and create sugar?
Introduction to Plant Physiology
มุมมอง 1.1K4 ปีที่แล้ว
Just a short introduction to my background and approach to the course. (Plant Physiology Spring 2020)
Insects in the field
มุมมอง 734 ปีที่แล้ว
Any field biologist knows that the summer field season = bug season! Here is a quick "guide" for dealing with them at Harvard Forest. Enjoy!
Assessing Eastern Hemlock tree health
มุมมอง 1934 ปีที่แล้ว
Environmental Science & Policy major, Steph Long, tells us about her project using drones to assess health of Eastern Hemlock trees at the MacLeish Field Station. This is an ongoing collaboration with the Spatial Analysis Lab at Smith College. There were some audio issues, but we hope you enjoy!
Lony's research at Harvard Forest
มุมมอง 1234 ปีที่แล้ว
Alonwyn "Lony" Clauser is a rising senior at Smith College and just completed their stellar REU summer project at Harvard Forest. Watch the video to hear more about it!
A day in the field measuring photosynthesis
มุมมอง 2994 ปีที่แล้ว
Join us for a typical day measuring photosynthesis in the field at Harvard Forest. Lony uses the LI-COR 6400XT to run CO2 and light response curves on tree seedlings for their big summer REU project. Lony makes it look easy, but LI-COR users know that mastering the machine takes a lot of training. Enjoy!
amazing video! Thank you so much <3
This was so helpful ! Thanks ❤
🙋🏿
Foreal, maam your explanation has totally simplified the concept, great work!! even the A/Ci curve concept was really well explained
great video thankyou
the neuronal spikes during battrey low and lazy neurons that wants to kill the time while auto programme is running. Love IRGA experiments. <3. So nice you are doing these videos. Very much helpful and informative.
Vow! well explained. simplified in details to make audience understand. Thanks for the video. Please keep uploading interesting simplified plant physiology concepts and experiments. I hope my comment would motivate you to work on your channel. thanks alot.
Thank you so much. Please do continue your good work.
Love this stuff! From your chart, the rate of photosynthesis for a healthy set of variables including a steady temp of slightly less than 77 F (temps a guess on my part for purposes of example) seems to drop off at 600 ppm. Question - If at the point of drop off the temp was increased up to say 85 F while maintaining a good VPD rate for the current stage of growth and the proper EC (nutrient salts) feeding schedule would the photosynthesis rate continue to be linear and not drop off?
Here before 20 subscribers. What music do you like? also, I would love to Be friends xD
Awesome Work. You must work really hard! I Really want to Be youtube friends x3
Lovely video. How Many Videos have you made? #great x3
I hope that your channel grow.
This is amazing!