In Defense of Plants Podcast

Sometimes the differences between species are vast (e.g., a maple and an oak) but other times they are subtle to the point of requiring a trained eye and essentially learning a new language. So-called cryptic species are extremely challenging to understand, but that is why spending time in the field can be so rewarding. Moreover, to understand cryptic species is to better understand biodiversity o...

There is no denying that roots are one of the most important organs on a plant. However, unless its an epiphyte, root activity takes place underground, largely out of site and out of mind. This has not stopped my guest today from trying to understand the origin and evolution of these amazing structures. We revisit a conversation with plant evolutionary biologist Dr. Sandy Hetherington whose work s...

Any organism that ephemeral gravel puddles home must be ready to deal with extremes. That is what makes snorkelwort (Gratiola amphiantha) and its aquatic neighbors so darn cool. It's what also makes it so very rare. Join me and Anna Wyngaarden as we take a deep dive into how she is trying to solve some of the many mysteries surrounding how plants like snorkelwort, mat-forming quillwort (Isoetes te...

Boynton/Alabama sandstone ( Quercus boyntonii ) and Georgia oaks ( Q. georgiana ) are among the rarest oaks in North America and yet we know so little about them. This paucity of knowledge can make conservation difficult, but that doesn't stop people like Patrick Thompson from trying. Join us as we discuss the multifaceted efforts aimed at keeping these trees from going extinct. This episode was p...

Water lettuce (Pistia stratiotes) has long been maligned for its invasive tendencies. This floating aquatic aroid grows fast and responds well to poor water quality, and because of this, states like Florida spend lots of time and money on trying to eradicate it. However, a combination of fossil end recent genetic evidence suggests that we should rethink our approach to water lettuce in Florida. Jo...

The Southeast is one of North America's biodiversity hotspots. Any trip through this region will be rewarded with lots of botanical splendor if you know where to look. Join Conservation Biologist Sara Johnson and me as we reminisce about a recent botanical excursion and learn about a fraction of the botanical diversity we met along the way. This episode was produced in part by Mohsin Kazmi Photogr...

I have said it before, and I will say it again: plants ARE habitat. Nowhere is this fact more apparent than in the field of wildlife ecology. From food to shelter, one simply can't understand the innerworkings of nature without understanding plants. Join me and Wildlife Ecologist Dr. Chris Moorman as we look at why plants are so important to conservation efforts. This episode was produced in part...

Competition for nutrients is a major driver of plant evolution, especially in nutrient-poor soils. As such, plants have evolved myriad ways of getting a "root up" on the competition. Dr. Jim Dalling joins us to discuss two recent discoveries related to two species with distinct and incredible root adaptations aimed at maximizing nutrient capture in highly competitive tropical ecosystems. This epis...

The Appalachian region may not readily seem like a fire-prone region, but parts of it certainly are. Fire can be an important tool in sustaining biodiversity, but modern understanding of its role is limited. That is why people like Dr. Don Hagan study the effects of prescribed fire in the Appalachian Mountains and beyond. Join me and Dr. Hagan as we explore fire as a tool for ecosystem restoration...

Wildfires are familiar to those living on Earth today, but what about in the past? How does one go about studying ancient wildfires through deep time? Some of the answers lie in coal deposits. Join me and Dr. Ian Glasspool as we explore how he studies wildfire events dating back hundreds of millions of years and marvel at the amazing stories his data are able to tell! This episode was produced in...

Good news is hard to come by in the world of plant conservation, but it is out there! Take, for instance, some recent examples on Santa Cruz Island in which the recovery of a handful of endangered plants, including island bedstraw ( Galium buxifolium ) and Santa Cruz Island Dudleya ( Dudleya nesiotica ), has been so successful, they have been delisted. That doesn't mean conservationists no longer...

How does one breath life into an extinct tree only known from fossils? There are a lot of answers to this question, but my guest today decided to go digital. Tim Stonesifer is the Assistant Director for Media Technology at Colby College and the person responsible for creating the 3D reconstruction of Sanfordiacaulis densifolia that was discovered by Dr. Gastaldo and colleagues (Ep. 462). Join us a...

Fossil hunting is like playing the lottery, your odds of hitting big are infinitesimal, but it can happen. Such was the case for Dr. Bob Gastaldo and colleagues when they unearthed the remains of Sanfordiacaulis densifolia, an extinct tree from the Carboniferous Period unlike anything we have ever seen. Join me and Dr. Gastaldo as we take a deep dive into why this tree is so strange and what it ca...

Litter trapping plants don't worry about soil, they make their own! Because so many species in the tropics grow either epiphytically or in nutrient poor soil, some of them have turned to alternative solutions. Their anatomy is such that they collect everything from dead leaves to bird droppings. A diverse community of soil microbes and invertebrates can then go to work to create nutrient rich humu...

For Dr. Rob Raguso, the phrase "stop and smell the roses" takes on a whole new meaning. Dr. Raguso studies the intricate world of floral chemistry. You are undoubtedly familiar with some of the wonderful odors flowers produce but such tantalizing smells are only the beginning. The world of floral chemistry is quite remarkable and the function of the myriad substances they produce go much deeper th...

Plant pigments certainly catch the eyes of many organisms, but they serve many important functions beyond simple attraction. For instance, plant pigments can play a huge role in managing stressors like heat, sunlight, and more. Join me and Dr. Niky Hughes as we explore one of the most abundant and important types of plant pigments - anthocyanins - and learn how they not only vary in appearance but...

Plant stress starts at the molecular level but can influence entire ecosystems. That is why questions about drought, heat, and climate change fuel Dr. Lou Santiago's research. Join us as we explore the ins and outs of studying plant stress in different ecosystems. This episode was produced in part by Charis, EJ, Laura, Sung, NOK, Stephen, Heidi, Kristin, Luke, Sea, Shannon, Thomas, Will, Jamie, Wa...

Plants obviously need water to survive, but how do they interact with water in a more physical sense? How plants like trees capture and distribute precipitation can have massive consequences for ecosystem and societal processes. From soil formation to stormwater management, understanding wet plants is very important. Join me and Dr. John Van Stan as we explore how his lab is tackling the complex d...

What wetland scene would be complete without a few cattails? The genus Typha is synonymous with wetlands yet as you will hear in this episode, we know so little about them. Joining us is Dr. Pam Geddes from Northeastern Illinois University to talk to us about her work on cattail invasion ecology. What started as a question about ecosystem function and monocultures has morphed into an exploration t...

We take seeds for granted, yet still have much to learn about how they work. What factors play in to seed dormancy? How long can some seeds remain dormant? What cues are required to break dormancy? All these questions and more drive Dr. Grace Fleming's research. Join us as we explore how molecular processes involving mRNA play a role in the mysterious world of seeds. This episode was produced in p...

My guest today is Melissa Díaz-Morales from the Jardín Botánico Lankester in Costa Rica and her work focuses on orchid pollination. Orchids are known for their deceitful pollination syndromes and Melissa has spent the last few years working on a lady slipper orchid known as Phragmipedium longifolium. This flowers of this beautiful orchid appear to be mimicking aphid infestations. Why is that? List...

We revisit a conversation with PhD student Melissa Díaz-Morales and Director of the Lankester Botanical Gardens, Dr. Adam Karremans to look at how flies have managed to influence the evolution of the largest subtribe of orchids in the world - the pleurothallids. This remarkable group of orchids is home to over 5,000 unique species and presents some of the most stunning and complex floral morpholog...

Knowing what we don't know can be as important as knowing what we do. Even highly charismatic plants like orchids harbor many mysteries in need of investigation. Join me and Dr. Adam Karrenmans as we discuss his new book "Demystifying Orchid Pollination" and learn why paying attention to nature at all scales can provide valuable insights into biodiversity and conservation. This episode was produce...

Many of us are familiar with Darwin's finches and the impact animals made on his work, but what about his obsession with plants? Indeed, plants were an instrumental part of Darwin's life, helping him understand how organisms adapt and evolve. Darwin's relationship with plants are the subject of a beautifully illustrated new book "Darwin and the Art of Botany." With the help of Oak Spring Garden Fo...

Redwoods (Sequoia sempervirens) can grow so big and gnarly that their canopies support entire ecosystems. From lichens and liverworts, to ericaceous shrubs, these ecological communities are very important to the biodiversity of redwood habitat. However, not all redwoods have what it takes to provide habitat for these organisms. Join me and Marie Antoine as we explore the ins and outs of redwood ca...